20177220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6863}}^1$

素因数の和:6889

約数の個数: 72

約数和(自身を含む): 65729664

約数和(自身を除く): 45552444

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6863, 13726, 20589, 27452, 34315, 41178, 48041, 68630, 82356, 96082, 102945, 137260, 144123, 192164, 205890, 240205, 288246, 336287, 411780, 480410, 576492, 672574, 720615, 960820, 1008861, 1345148, 1441230, 1681435, 2017722, 2882460, 3362870, 4035444, 5044305, 6725740, 10088610, 20177220]

約数ペア:

[(1, 20177220), (2, 10088610), (3, 6725740), (4, 5044305), (5, 4035444), (6, 3362870), (7, 2882460), (10, 2017722), (12, 1681435), (14, 1441230), (15, 1345148), (20, 1008861), (21, 960820), (28, 720615), (30, 672574), (35, 576492), (42, 480410), (49, 411780), (60, 336287), (70, 288246), (84, 240205), (98, 205890), (105, 192164), (140, 144123), (147, 137260), (196, 102945), (210, 96082), (245, 82356), (294, 68630), (420, 48041), (490, 41178), (588, 34315), (735, 27452), (980, 20589), (1470, 13726), (2940, 6863)]