128840460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306763}}^1$

素因数の和:306782

約数の個数: 48

約数和(自身を含む): 412290816

約数和(自身を除く): 283450356

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306763, 613526, 920289, 1227052, 1533815, 1840578, 2147341, 3067630, 3681156, 4294682, 4601445, 6135260, 6442023, 8589364, 9202890, 10736705, 12884046, 18405780, 21473410, 25768092, 32210115, 42946820, 64420230, 128840460]

約数ペア:

[(1, 128840460), (2, 64420230), (3, 42946820), (4, 32210115), (5, 25768092), (6, 21473410), (7, 18405780), (10, 12884046), (12, 10736705), (14, 9202890), (15, 8589364), (20, 6442023), (21, 6135260), (28, 4601445), (30, 4294682), (35, 3681156), (42, 3067630), (60, 2147341), (70, 1840578), (84, 1533815), (105, 1227052), (140, 920289), (210, 613526), (420, 306763)]