19812780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8467}}^1$

素因数の和:8495

約数の個数: 72

約数和(自身を含む): 64729392

約数和(自身を除く): 44916612

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8467, 16934, 25401, 33868, 42335, 50802, 76203, 84670, 101604, 110071, 127005, 152406, 169340, 220142, 254010, 304812, 330213, 381015, 440284, 508020, 550355, 660426, 762030, 990639, 1100710, 1320852, 1524060, 1651065, 1981278, 2201420, 3302130, 3962556, 4953195, 6604260, 9906390, 19812780]

約数ペア:

[(1, 19812780), (2, 9906390), (3, 6604260), (4, 4953195), (5, 3962556), (6, 3302130), (9, 2201420), (10, 1981278), (12, 1651065), (13, 1524060), (15, 1320852), (18, 1100710), (20, 990639), (26, 762030), (30, 660426), (36, 550355), (39, 508020), (45, 440284), (52, 381015), (60, 330213), (65, 304812), (78, 254010), (90, 220142), (117, 169340), (130, 152406), (156, 127005), (180, 110071), (195, 101604), (234, 84670), (260, 76203), (390, 50802), (468, 42335), (585, 33868), (780, 25401), (1170, 16934), (2340, 8467)]