20854621900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{90007}}^1$

素因数の和:90359

約数の個数: 72

約数和(自身を含む): 51876290816

約数和(自身を除く): 31021668916

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 331, 350, 662, 700, 1324, 1655, 2317, 3310, 4634, 6620, 8275, 9268, 11585, 16550, 23170, 33100, 46340, 57925, 90007, 115850, 180014, 231700, 360028, 450035, 630049, 900070, 1260098, 1800140, 2250175, 2520196, 3150245, 4500350, 6300490, 9000700, 12600980, 15751225, 29792317, 31502450, 59584634, 63004900, 119169268, 148961585, 208546219, 297923170, 417092438, 595846340, 744807925, 834184876, 1042731095, 1489615850, 2085462190, 2979231700, 4170924380, 5213655475, 10427310950, 20854621900]

約数ペア:

[(1, 20854621900), (2, 10427310950), (4, 5213655475), (5, 4170924380), (7, 2979231700), (10, 2085462190), (14, 1489615850), (20, 1042731095), (25, 834184876), (28, 744807925), (35, 595846340), (50, 417092438), (70, 297923170), (100, 208546219), (140, 148961585), (175, 119169268), (331, 63004900), (350, 59584634), (662, 31502450), (700, 29792317), (1324, 15751225), (1655, 12600980), (2317, 9000700), (3310, 6300490), (4634, 4500350), (6620, 3150245), (8275, 2520196), (9268, 2250175), (11585, 1800140), (16550, 1260098), (23170, 900070), (33100, 630049), (46340, 450035), (57925, 360028), (90007, 231700), (115850, 180014)]