20998216920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{613}}^1\times {\mathrm{285457}}^1$

素因数の和:286084

約数の個数: 64

約数和(自身を含む): 63097636320

約数和(自身を除く): 42099419400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 613, 1226, 1839, 2452, 3065, 3678, 4904, 6130, 7356, 9195, 12260, 14712, 18390, 24520, 36780, 73560, 285457, 570914, 856371, 1141828, 1427285, 1712742, 2283656, 2854570, 3425484, 4281855, 5709140, 6850968, 8563710, 11418280, 17127420, 34254840, 174985141, 349970282, 524955423, 699940564, 874925705, 1049910846, 1399881128, 1749851410, 2099821692, 2624777115, 3499702820, 4199643384, 5249554230, 6999405640, 10499108460, 20998216920]

約数ペア:

[(1, 20998216920), (2, 10499108460), (3, 6999405640), (4, 5249554230), (5, 4199643384), (6, 3499702820), (8, 2624777115), (10, 2099821692), (12, 1749851410), (15, 1399881128), (20, 1049910846), (24, 874925705), (30, 699940564), (40, 524955423), (60, 349970282), (120, 174985141), (613, 34254840), (1226, 17127420), (1839, 11418280), (2452, 8563710), (3065, 6850968), (3678, 5709140), (4904, 4281855), (6130, 3425484), (7356, 2854570), (9195, 2283656), (12260, 1712742), (14712, 1427285), (18390, 1141828), (24520, 856371), (36780, 570914), (73560, 285457)]