403938400

素因数分解:

$2^5\times 5^2\times {\mathrm{211}}^1\times {\mathrm{2393}}^1$

素因数の和:2624

約数の個数: 72

約数和(自身を含む): 991202184

約数和(自身を除く): 587263784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 211, 400, 422, 800, 844, 1055, 1688, 2110, 2393, 3376, 4220, 4786, 5275, 6752, 8440, 9572, 10550, 11965, 16880, 19144, 21100, 23930, 33760, 38288, 42200, 47860, 59825, 76576, 84400, 95720, 119650, 168800, 191440, 239300, 382880, 478600, 504923, 957200, 1009846, 1914400, 2019692, 2524615, 4039384, 5049230, 8078768, 10098460, 12623075, 16157536, 20196920, 25246150, 40393840, 50492300, 80787680, 100984600, 201969200, 403938400]

約数ペア:

[(1, 403938400), (2, 201969200), (4, 100984600), (5, 80787680), (8, 50492300), (10, 40393840), (16, 25246150), (20, 20196920), (25, 16157536), (32, 12623075), (40, 10098460), (50, 8078768), (80, 5049230), (100, 4039384), (160, 2524615), (200, 2019692), (211, 1914400), (400, 1009846), (422, 957200), (800, 504923), (844, 478600), (1055, 382880), (1688, 239300), (2110, 191440), (2393, 168800), (3376, 119650), (4220, 95720), (4786, 84400), (5275, 76576), (6752, 59825), (8440, 47860), (9572, 42200), (10550, 38288), (11965, 33760), (16880, 23930), (19144, 21100)]