1815679880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{401}}^1$

素因数の和:679

約数の個数: 128

約数和(自身を含む): 4756078080

約数和(自身を除く): 2940398200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 103, 140, 157, 206, 280, 314, 401, 412, 515, 628, 721, 785, 802, 824, 1030, 1099, 1256, 1442, 1570, 1604, 2005, 2060, 2198, 2807, 2884, 3140, 3208, 3605, 4010, 4120, 4396, 5495, 5614, 5768, 6280, 7210, 8020, 8792, 10990, 11228, 14035, 14420, 16040, 16171, 21980, 22456, 28070, 28840, 32342, 41303, 43960, 56140, 62957, 64684, 80855, 82606, 112280, 113197, 125914, 129368, 161710, 165212, 206515, 226394, 251828, 289121, 314785, 323420, 330424, 413030, 440699, 452788, 503656, 565985, 578242, 629570, 646840, 826060, 881398, 905576, 1131970, 1156484, 1259140, 1445605, 1652120, 1762796, 2203495, 2263940, 2312968, 2518280, 2891210, 3525592, 4406990, 4527880, 5782420, 6484571, 8813980, 11564840, 12969142, 17627960, 25938284, 32422855, 45391997, 51876568, 64845710, 90783994, 129691420, 181567988, 226959985, 259382840, 363135976, 453919970, 907839940, 1815679880]

約数ペア:

[(1, 1815679880), (2, 907839940), (4, 453919970), (5, 363135976), (7, 259382840), (8, 226959985), (10, 181567988), (14, 129691420), (20, 90783994), (28, 64845710), (35, 51876568), (40, 45391997), (56, 32422855), (70, 25938284), (103, 17627960), (140, 12969142), (157, 11564840), (206, 8813980), (280, 6484571), (314, 5782420), (401, 4527880), (412, 4406990), (515, 3525592), (628, 2891210), (721, 2518280), (785, 2312968), (802, 2263940), (824, 2203495), (1030, 1762796), (1099, 1652120), (1256, 1445605), (1442, 1259140), (1570, 1156484), (1604, 1131970), (2005, 905576), (2060, 881398), (2198, 826060), (2807, 646840), (2884, 629570), (3140, 578242), (3208, 565985), (3605, 503656), (4010, 452788), (4120, 440699), (4396, 413030), (5495, 330424), (5614, 323420), (5768, 314785), (6280, 289121), (7210, 251828), (8020, 226394), (8792, 206515), (10990, 165212), (11228, 161710), (14035, 129368), (14420, 125914), (16040, 113197), (16171, 112280), (21980, 82606), (22456, 80855), (28070, 64684), (28840, 62957), (32342, 56140), (41303, 43960)]