20465040

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1201}}^1$

素因数の和:1288

約数の個数: 80

約数和(自身を含む): 64388736

約数和(自身を除く): 43923696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 71, 80, 120, 142, 213, 240, 284, 355, 426, 568, 710, 852, 1065, 1136, 1201, 1420, 1704, 2130, 2402, 2840, 3408, 3603, 4260, 4804, 5680, 6005, 7206, 8520, 9608, 12010, 14412, 17040, 18015, 19216, 24020, 28824, 36030, 48040, 57648, 72060, 85271, 96080, 144120, 170542, 255813, 288240, 341084, 426355, 511626, 682168, 852710, 1023252, 1279065, 1364336, 1705420, 2046504, 2558130, 3410840, 4093008, 5116260, 6821680, 10232520, 20465040]

約数ペア:

[(1, 20465040), (2, 10232520), (3, 6821680), (4, 5116260), (5, 4093008), (6, 3410840), (8, 2558130), (10, 2046504), (12, 1705420), (15, 1364336), (16, 1279065), (20, 1023252), (24, 852710), (30, 682168), (40, 511626), (48, 426355), (60, 341084), (71, 288240), (80, 255813), (120, 170542), (142, 144120), (213, 96080), (240, 85271), (284, 72060), (355, 57648), (426, 48040), (568, 36030), (710, 28824), (852, 24020), (1065, 19216), (1136, 18015), (1201, 17040), (1420, 14412), (1704, 12010), (2130, 9608), (2402, 8520), (2840, 7206), (3408, 6005), (3603, 5680), (4260, 4804)]