21682020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11657}}^1$

素因数の和:11700

約数の個数: 48

約数和(自身を含む): 62673408

約数和(自身を除く): 40991388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 11657, 23314, 34971, 46628, 58285, 69942, 116570, 139884, 174855, 233140, 349710, 361367, 699420, 722734, 1084101, 1445468, 1806835, 2168202, 3613670, 4336404, 5420505, 7227340, 10841010, 21682020]

約数ペア:

[(1, 21682020), (2, 10841010), (3, 7227340), (4, 5420505), (5, 4336404), (6, 3613670), (10, 2168202), (12, 1806835), (15, 1445468), (20, 1084101), (30, 722734), (31, 699420), (60, 361367), (62, 349710), (93, 233140), (124, 174855), (155, 139884), (186, 116570), (310, 69942), (372, 58285), (465, 46628), (620, 34971), (930, 23314), (1860, 11657)]