406080160

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 144

約数和(自身を含む): 1050991200

約数和(自身を除く): 644911040

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 139, 152, 155, 160, 190, 248, 278, 304, 310, 380, 496, 556, 589, 608, 620, 695, 760, 961, 992, 1112, 1178, 1240, 1390, 1520, 1922, 2224, 2356, 2480, 2641, 2780, 2945, 3040, 3844, 4309, 4448, 4712, 4805, 4960, 5282, 5560, 5890, 7688, 8618, 9424, 9610, 10564, 11120, 11780, 13205, 15376, 17236, 18259, 18848, 19220, 21128, 21545, 22240, 23560, 26410, 30752, 34472, 36518, 38440, 42256, 43090, 47120, 52820, 68944, 73036, 76880, 81871, 84512, 86180, 91295, 94240, 105640, 133579, 137888, 146072, 153760, 163742, 172360, 182590, 211280, 267158, 292144, 327484, 344720, 365180, 409355, 422560, 534316, 584288, 654968, 667895, 689440, 730360, 818710, 1068632, 1309936, 1335790, 1460720, 1637420, 2137264, 2538001, 2619872, 2671580, 2921440, 3274840, 4274528, 5076002, 5343160, 6549680, 10152004, 10686320, 12690005, 13099360, 20304008, 21372640, 25380010, 40608016, 50760020, 81216032, 101520040, 203040080, 406080160]

約数ペア:

[(1, 406080160), (2, 203040080), (4, 101520040), (5, 81216032), (8, 50760020), (10, 40608016), (16, 25380010), (19, 21372640), (20, 20304008), (31, 13099360), (32, 12690005), (38, 10686320), (40, 10152004), (62, 6549680), (76, 5343160), (80, 5076002), (95, 4274528), (124, 3274840), (139, 2921440), (152, 2671580), (155, 2619872), (160, 2538001), (190, 2137264), (248, 1637420), (278, 1460720), (304, 1335790), (310, 1309936), (380, 1068632), (496, 818710), (556, 730360), (589, 689440), (608, 667895), (620, 654968), (695, 584288), (760, 534316), (961, 422560), (992, 409355), (1112, 365180), (1178, 344720), (1240, 327484), (1390, 292144), (1520, 267158), (1922, 211280), (2224, 182590), (2356, 172360), (2480, 163742), (2641, 153760), (2780, 146072), (2945, 137888), (3040, 133579), (3844, 105640), (4309, 94240), (4448, 91295), (4712, 86180), (4805, 84512), (4960, 81871), (5282, 76880), (5560, 73036), (5890, 68944), (7688, 52820), (8618, 47120), (9424, 43090), (9610, 42256), (10564, 38440), (11120, 36518), (11780, 34472), (13205, 30752), (15376, 26410), (17236, 23560), (18259, 22240), (18848, 21545), (19220, 21128)]