19005981520

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^2\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:761

約数の個数: 120

約数和(自身を含む): 45366158880

約数和(自身を除く): 26360177360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 139, 236, 278, 295, 472, 491, 556, 590, 695, 944, 982, 1112, 1180, 1390, 1964, 2224, 2360, 2455, 2780, 3481, 3928, 4720, 4910, 5560, 6962, 7856, 8201, 9820, 11120, 13924, 16402, 17405, 19640, 27848, 28969, 32804, 34810, 39280, 41005, 55696, 57938, 65608, 68249, 69620, 82010, 115876, 131216, 136498, 139240, 144845, 164020, 231752, 272996, 278480, 289690, 328040, 341245, 463504, 483859, 545992, 579380, 656080, 682490, 967718, 1091984, 1158760, 1364980, 1709171, 1935436, 2317520, 2419295, 2729960, 3418342, 3870872, 4026691, 4838590, 5459920, 6836684, 7741744, 8053382, 8545855, 9677180, 13673368, 16106764, 17091710, 19354360, 20133455, 27346736, 32213528, 34183420, 38708720, 40266910, 64427056, 68366840, 80533820, 136733680, 161067640, 237574769, 322135280, 475149538, 950299076, 1187873845, 1900598152, 2375747690, 3801196304, 4751495380, 9502990760, 19005981520]

約数ペア:

[(1, 19005981520), (2, 9502990760), (4, 4751495380), (5, 3801196304), (8, 2375747690), (10, 1900598152), (16, 1187873845), (20, 950299076), (40, 475149538), (59, 322135280), (80, 237574769), (118, 161067640), (139, 136733680), (236, 80533820), (278, 68366840), (295, 64427056), (472, 40266910), (491, 38708720), (556, 34183420), (590, 32213528), (695, 27346736), (944, 20133455), (982, 19354360), (1112, 17091710), (1180, 16106764), (1390, 13673368), (1964, 9677180), (2224, 8545855), (2360, 8053382), (2455, 7741744), (2780, 6836684), (3481, 5459920), (3928, 4838590), (4720, 4026691), (4910, 3870872), (5560, 3418342), (6962, 2729960), (7856, 2419295), (8201, 2317520), (9820, 1935436), (11120, 1709171), (13924, 1364980), (16402, 1158760), (17405, 1091984), (19640, 967718), (27848, 682490), (28969, 656080), (32804, 579380), (34810, 545992), (39280, 483859), (41005, 463504), (55696, 341245), (57938, 328040), (65608, 289690), (68249, 278480), (69620, 272996), (82010, 231752), (115876, 164020), (131216, 144845), (136498, 139240)]