661517680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:303

約数の個数: 160

約数和(自身を含む): 1699891200

約数和(自身を除く): 1038373520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 101, 124, 139, 152, 155, 190, 202, 248, 278, 304, 310, 380, 404, 496, 505, 556, 589, 620, 695, 760, 808, 1010, 1112, 1178, 1240, 1390, 1520, 1616, 1919, 2020, 2224, 2356, 2480, 2641, 2780, 2945, 3131, 3838, 4040, 4309, 4712, 5282, 5560, 5890, 6262, 7676, 8080, 8618, 9424, 9595, 10564, 11120, 11780, 12524, 13205, 14039, 15352, 15655, 17236, 19190, 21128, 21545, 23560, 25048, 26410, 28078, 30704, 31310, 34472, 38380, 42256, 43090, 47120, 50096, 52820, 56156, 59489, 62620, 68944, 70195, 76760, 81871, 86180, 105640, 112312, 118978, 125240, 140390, 153520, 163742, 172360, 211280, 224624, 237956, 250480, 266741, 280780, 297445, 327484, 344720, 409355, 435209, 475912, 533482, 561560, 594890, 654968, 818710, 870418, 951824, 1066964, 1123120, 1189780, 1309936, 1333705, 1637420, 1740836, 2133928, 2176045, 2379560, 2667410, 3274840, 3481672, 4267856, 4352090, 4759120, 5334820, 6549680, 6963344, 8268971, 8704180, 10669640, 16537942, 17408360, 21339280, 33075884, 34816720, 41344855, 66151768, 82689710, 132303536, 165379420, 330758840, 661517680]

約数ペア:

[(1, 661517680), (2, 330758840), (4, 165379420), (5, 132303536), (8, 82689710), (10, 66151768), (16, 41344855), (19, 34816720), (20, 33075884), (31, 21339280), (38, 17408360), (40, 16537942), (62, 10669640), (76, 8704180), (80, 8268971), (95, 6963344), (101, 6549680), (124, 5334820), (139, 4759120), (152, 4352090), (155, 4267856), (190, 3481672), (202, 3274840), (248, 2667410), (278, 2379560), (304, 2176045), (310, 2133928), (380, 1740836), (404, 1637420), (496, 1333705), (505, 1309936), (556, 1189780), (589, 1123120), (620, 1066964), (695, 951824), (760, 870418), (808, 818710), (1010, 654968), (1112, 594890), (1178, 561560), (1240, 533482), (1390, 475912), (1520, 435209), (1616, 409355), (1919, 344720), (2020, 327484), (2224, 297445), (2356, 280780), (2480, 266741), (2641, 250480), (2780, 237956), (2945, 224624), (3131, 211280), (3838, 172360), (4040, 163742), (4309, 153520), (4712, 140390), (5282, 125240), (5560, 118978), (5890, 112312), (6262, 105640), (7676, 86180), (8080, 81871), (8618, 76760), (9424, 70195), (9595, 68944), (10564, 62620), (11120, 59489), (11780, 56156), (12524, 52820), (13205, 50096), (14039, 47120), (15352, 43090), (15655, 42256), (17236, 38380), (19190, 34472), (21128, 31310), (21545, 30704), (23560, 28078), (25048, 26410)]