20435000

素因数分解:

$2^3\times 5^4\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 49390440

約数和(自身を除く): 28955440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 67, 100, 122, 125, 134, 200, 244, 250, 268, 305, 335, 488, 500, 536, 610, 625, 670, 1000, 1220, 1250, 1340, 1525, 1675, 2440, 2500, 2680, 3050, 3350, 4087, 5000, 6100, 6700, 7625, 8174, 8375, 12200, 13400, 15250, 16348, 16750, 20435, 30500, 32696, 33500, 38125, 40870, 41875, 61000, 67000, 76250, 81740, 83750, 102175, 152500, 163480, 167500, 204350, 305000, 335000, 408700, 510875, 817400, 1021750, 2043500, 2554375, 4087000, 5108750, 10217500, 20435000]

約数ペア:

[(1, 20435000), (2, 10217500), (4, 5108750), (5, 4087000), (8, 2554375), (10, 2043500), (20, 1021750), (25, 817400), (40, 510875), (50, 408700), (61, 335000), (67, 305000), (100, 204350), (122, 167500), (125, 163480), (134, 152500), (200, 102175), (244, 83750), (250, 81740), (268, 76250), (305, 67000), (335, 61000), (488, 41875), (500, 40870), (536, 38125), (610, 33500), (625, 32696), (670, 30500), (1000, 20435), (1220, 16750), (1250, 16348), (1340, 15250), (1525, 13400), (1675, 12200), (2440, 8375), (2500, 8174), (2680, 7625), (3050, 6700), (3350, 6100), (4087, 5000)]