20228740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 51609600

約数和(自身を除く): 31380860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 59, 62, 70, 79, 118, 124, 140, 155, 158, 217, 236, 295, 310, 316, 395, 413, 434, 553, 590, 620, 790, 826, 868, 1085, 1106, 1180, 1580, 1652, 1829, 2065, 2170, 2212, 2449, 2765, 3658, 4130, 4340, 4661, 4898, 5530, 7316, 8260, 9145, 9322, 9796, 11060, 12245, 12803, 17143, 18290, 18644, 23305, 24490, 25606, 32627, 34286, 36580, 46610, 48980, 51212, 64015, 65254, 68572, 85715, 93220, 128030, 130508, 144491, 163135, 171430, 256060, 288982, 326270, 342860, 577964, 652540, 722455, 1011437, 1444910, 2022874, 2889820, 4045748, 5057185, 10114370, 20228740]

約数ペア:

[(1, 20228740), (2, 10114370), (4, 5057185), (5, 4045748), (7, 2889820), (10, 2022874), (14, 1444910), (20, 1011437), (28, 722455), (31, 652540), (35, 577964), (59, 342860), (62, 326270), (70, 288982), (79, 256060), (118, 171430), (124, 163135), (140, 144491), (155, 130508), (158, 128030), (217, 93220), (236, 85715), (295, 68572), (310, 65254), (316, 64015), (395, 51212), (413, 48980), (434, 46610), (553, 36580), (590, 34286), (620, 32627), (790, 25606), (826, 24490), (868, 23305), (1085, 18644), (1106, 18290), (1180, 17143), (1580, 12803), (1652, 12245), (1829, 11060), (2065, 9796), (2170, 9322), (2212, 9145), (2449, 8260), (2765, 7316), (3658, 5530), (4130, 4898), (4340, 4661)]