21442140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{857}}^1$

素因数の和:1011

約数の個数: 72

約数和(自身を含む): 65585520

約数和(自身を除く): 44143380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 834, 857, 1251, 1390, 1668, 1714, 2085, 2502, 2571, 2780, 3428, 4170, 4285, 5004, 5142, 6255, 7713, 8340, 8570, 10284, 12510, 12855, 15426, 17140, 25020, 25710, 30852, 38565, 51420, 77130, 119123, 154260, 238246, 357369, 476492, 595615, 714738, 1072107, 1191230, 1429476, 1786845, 2144214, 2382460, 3573690, 4288428, 5360535, 7147380, 10721070, 21442140]

約数ペア:

[(1, 21442140), (2, 10721070), (3, 7147380), (4, 5360535), (5, 4288428), (6, 3573690), (9, 2382460), (10, 2144214), (12, 1786845), (15, 1429476), (18, 1191230), (20, 1072107), (30, 714738), (36, 595615), (45, 476492), (60, 357369), (90, 238246), (139, 154260), (180, 119123), (278, 77130), (417, 51420), (556, 38565), (695, 30852), (834, 25710), (857, 25020), (1251, 17140), (1390, 15426), (1668, 12855), (1714, 12510), (2085, 10284), (2502, 8570), (2571, 8340), (2780, 7713), (3428, 6255), (4170, 5142), (4285, 5004)]