256821012

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{379}}^1\times {\mathrm{2689}}^1$

素因数の和:3085

約数の個数: 72

約数和(自身を含む): 744161600

約数和(自身を除く): 487340588

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 379, 758, 1137, 1516, 2274, 2653, 2689, 3411, 4548, 5306, 5378, 6822, 7959, 8067, 10612, 10756, 13644, 15918, 16134, 18823, 23877, 24201, 31836, 32268, 37646, 47754, 48402, 56469, 75292, 95508, 96804, 112938, 169407, 225876, 338814, 677628, 1019131, 2038262, 3057393, 4076524, 6114786, 7133917, 9172179, 12229572, 14267834, 18344358, 21401751, 28535668, 36688716, 42803502, 64205253, 85607004, 128410506, 256821012]

約数ペア:

[(1, 256821012), (2, 128410506), (3, 85607004), (4, 64205253), (6, 42803502), (7, 36688716), (9, 28535668), (12, 21401751), (14, 18344358), (18, 14267834), (21, 12229572), (28, 9172179), (36, 7133917), (42, 6114786), (63, 4076524), (84, 3057393), (126, 2038262), (252, 1019131), (379, 677628), (758, 338814), (1137, 225876), (1516, 169407), (2274, 112938), (2653, 96804), (2689, 95508), (3411, 75292), (4548, 56469), (5306, 48402), (5378, 47754), (6822, 37646), (7959, 32268), (8067, 31836), (10612, 24201), (10756, 23877), (13644, 18823), (15918, 16134)]