21380511520

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{739}}^1$

素因数の和:1111

約数の個数: 192

約数和(自身を含む): 55138406400

約数和(自身を除く): 33757894880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 152, 155, 160, 190, 248, 304, 307, 310, 380, 496, 589, 608, 614, 620, 739, 760, 992, 1178, 1228, 1240, 1478, 1520, 1535, 2356, 2456, 2480, 2945, 2956, 3040, 3070, 3695, 4712, 4912, 4960, 5833, 5890, 5912, 6140, 7390, 9424, 9517, 9824, 11666, 11780, 11824, 12280, 14041, 14780, 18848, 19034, 22909, 23332, 23560, 23648, 24560, 28082, 29165, 29560, 38068, 45818, 46664, 47120, 47585, 49120, 56164, 58330, 59120, 70205, 76136, 91636, 93328, 94240, 95170, 112328, 114545, 116660, 118240, 140410, 152272, 180823, 183272, 186656, 190340, 224656, 226873, 229090, 233320, 280820, 304544, 361646, 366544, 380680, 435271, 449312, 453746, 458180, 466640, 561640, 723292, 733088, 761360, 870542, 904115, 907492, 916360, 933280, 1123280, 1134365, 1446584, 1522720, 1741084, 1808230, 1814984, 1832720, 2176355, 2246560, 2268730, 2893168, 3482168, 3616460, 3629968, 3665440, 4310587, 4352710, 4537460, 5786336, 6964336, 7033063, 7232920, 7259936, 8621174, 8705420, 9074920, 13928672, 14066126, 14465840, 17242348, 17410840, 18149840, 21552935, 28132252, 28931680, 34484696, 34821680, 35165315, 36299680, 43105870, 56264504, 68969392, 69643360, 70330630, 86211740, 112529008, 133628197, 137938784, 140661260, 172423480, 225058016, 267256394, 281322520, 344846960, 534512788, 562645040, 668140985, 689693920, 1069025576, 1125290080, 1336281970, 2138051152, 2672563940, 4276102304, 5345127880, 10690255760, 21380511520]

約数ペア:

[(1, 21380511520), (2, 10690255760), (4, 5345127880), (5, 4276102304), (8, 2672563940), (10, 2138051152), (16, 1336281970), (19, 1125290080), (20, 1069025576), (31, 689693920), (32, 668140985), (38, 562645040), (40, 534512788), (62, 344846960), (76, 281322520), (80, 267256394), (95, 225058016), (124, 172423480), (152, 140661260), (155, 137938784), (160, 133628197), (190, 112529008), (248, 86211740), (304, 70330630), (307, 69643360), (310, 68969392), (380, 56264504), (496, 43105870), (589, 36299680), (608, 35165315), (614, 34821680), (620, 34484696), (739, 28931680), (760, 28132252), (992, 21552935), (1178, 18149840), (1228, 17410840), (1240, 17242348), (1478, 14465840), (1520, 14066126), (1535, 13928672), (2356, 9074920), (2456, 8705420), (2480, 8621174), (2945, 7259936), (2956, 7232920), (3040, 7033063), (3070, 6964336), (3695, 5786336), (4712, 4537460), (4912, 4352710), (4960, 4310587), (5833, 3665440), (5890, 3629968), (5912, 3616460), (6140, 3482168), (7390, 2893168), (9424, 2268730), (9517, 2246560), (9824, 2176355), (11666, 1832720), (11780, 1814984), (11824, 1808230), (12280, 1741084), (14041, 1522720), (14780, 1446584), (18848, 1134365), (19034, 1123280), (22909, 933280), (23332, 916360), (23560, 907492), (23648, 904115), (24560, 870542), (28082, 761360), (29165, 733088), (29560, 723292), (38068, 561640), (45818, 466640), (46664, 458180), (47120, 453746), (47585, 449312), (49120, 435271), (56164, 380680), (58330, 366544), (59120, 361646), (70205, 304544), (76136, 280820), (91636, 233320), (93328, 229090), (94240, 226873), (95170, 224656), (112328, 190340), (114545, 186656), (116660, 183272), (118240, 180823), (140410, 152272)]