20127900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{397}}^1$

素因数の和:440

約数の個数: 108

約数和(自身を含む): 63219912

約数和(自身を除く): 43092012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 169, 195, 260, 300, 325, 338, 390, 397, 507, 650, 676, 780, 794, 845, 975, 1014, 1191, 1300, 1588, 1690, 1950, 1985, 2028, 2382, 2535, 3380, 3900, 3970, 4225, 4764, 5070, 5161, 5955, 7940, 8450, 9925, 10140, 10322, 11910, 12675, 15483, 16900, 19850, 20644, 23820, 25350, 25805, 29775, 30966, 39700, 50700, 51610, 59550, 61932, 67093, 77415, 103220, 119100, 129025, 134186, 154830, 201279, 258050, 268372, 309660, 335465, 387075, 402558, 516100, 670930, 774150, 805116, 1006395, 1341860, 1548300, 1677325, 2012790, 3354650, 4025580, 5031975, 6709300, 10063950, 20127900]

約数ペア:

[(1, 20127900), (2, 10063950), (3, 6709300), (4, 5031975), (5, 4025580), (6, 3354650), (10, 2012790), (12, 1677325), (13, 1548300), (15, 1341860), (20, 1006395), (25, 805116), (26, 774150), (30, 670930), (39, 516100), (50, 402558), (52, 387075), (60, 335465), (65, 309660), (75, 268372), (78, 258050), (100, 201279), (130, 154830), (150, 134186), (156, 129025), (169, 119100), (195, 103220), (260, 77415), (300, 67093), (325, 61932), (338, 59550), (390, 51610), (397, 50700), (507, 39700), (650, 30966), (676, 29775), (780, 25805), (794, 25350), (845, 23820), (975, 20644), (1014, 19850), (1191, 16900), (1300, 15483), (1588, 12675), (1690, 11910), (1950, 10322), (1985, 10140), (2028, 9925), (2382, 8450), (2535, 7940), (3380, 5955), (3900, 5161), (3970, 5070), (4225, 4764)]