21792420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:234

約数の個数: 144

約数和(自身を含む): 72770880

約数和(自身を除く): 50978460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 67, 78, 90, 117, 130, 134, 139, 156, 180, 195, 201, 234, 260, 268, 278, 335, 390, 402, 417, 468, 556, 585, 603, 670, 695, 780, 804, 834, 871, 1005, 1170, 1206, 1251, 1340, 1390, 1668, 1742, 1807, 2010, 2085, 2340, 2412, 2502, 2613, 2780, 3015, 3484, 3614, 4020, 4170, 4355, 5004, 5226, 5421, 6030, 6255, 7228, 7839, 8340, 8710, 9035, 9313, 10452, 10842, 12060, 12510, 13065, 15678, 16263, 17420, 18070, 18626, 21684, 25020, 26130, 27105, 27939, 31356, 32526, 36140, 37252, 39195, 46565, 52260, 54210, 55878, 65052, 78390, 81315, 83817, 93130, 108420, 111756, 121069, 139695, 156780, 162630, 167634, 186260, 242138, 279390, 325260, 335268, 363207, 419085, 484276, 558780, 605345, 726414, 838170, 1089621, 1210690, 1452828, 1676340, 1816035, 2179242, 2421380, 3632070, 4358484, 5448105, 7264140, 10896210, 21792420]

約数ペア:

[(1, 21792420), (2, 10896210), (3, 7264140), (4, 5448105), (5, 4358484), (6, 3632070), (9, 2421380), (10, 2179242), (12, 1816035), (13, 1676340), (15, 1452828), (18, 1210690), (20, 1089621), (26, 838170), (30, 726414), (36, 605345), (39, 558780), (45, 484276), (52, 419085), (60, 363207), (65, 335268), (67, 325260), (78, 279390), (90, 242138), (117, 186260), (130, 167634), (134, 162630), (139, 156780), (156, 139695), (180, 121069), (195, 111756), (201, 108420), (234, 93130), (260, 83817), (268, 81315), (278, 78390), (335, 65052), (390, 55878), (402, 54210), (417, 52260), (468, 46565), (556, 39195), (585, 37252), (603, 36140), (670, 32526), (695, 31356), (780, 27939), (804, 27105), (834, 26130), (871, 25020), (1005, 21684), (1170, 18626), (1206, 18070), (1251, 17420), (1340, 16263), (1390, 15678), (1668, 13065), (1742, 12510), (1807, 12060), (2010, 10842), (2085, 10452), (2340, 9313), (2412, 9035), (2502, 8710), (2613, 8340), (2780, 7839), (3015, 7228), (3484, 6255), (3614, 6030), (4020, 5421), (4170, 5226), (4355, 5004)]