645818520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{13421}}^1$

素因数の和:13836

約数の個数: 64

約数和(自身を含む): 1942431840

約数和(自身を除く): 1296613320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 401, 802, 1203, 1604, 2005, 2406, 3208, 4010, 4812, 6015, 8020, 9624, 12030, 13421, 16040, 24060, 26842, 40263, 48120, 53684, 67105, 80526, 107368, 134210, 161052, 201315, 268420, 322104, 402630, 536840, 805260, 1610520, 5381821, 10763642, 16145463, 21527284, 26909105, 32290926, 43054568, 53818210, 64581852, 80727315, 107636420, 129163704, 161454630, 215272840, 322909260, 645818520]

約数ペア:

[(1, 645818520), (2, 322909260), (3, 215272840), (4, 161454630), (5, 129163704), (6, 107636420), (8, 80727315), (10, 64581852), (12, 53818210), (15, 43054568), (20, 32290926), (24, 26909105), (30, 21527284), (40, 16145463), (60, 10763642), (120, 5381821), (401, 1610520), (802, 805260), (1203, 536840), (1604, 402630), (2005, 322104), (2406, 268420), (3208, 201315), (4010, 161052), (4812, 134210), (6015, 107368), (8020, 80526), (9624, 67105), (12030, 53684), (13421, 48120), (16040, 40263), (24060, 26842)]