21372890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:743

約数の個数: 64

約数和(自身を含む): 49206528

約数和(自身を除く): 27833638

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 41, 55, 70, 77, 82, 110, 154, 205, 287, 385, 410, 451, 574, 677, 770, 902, 1354, 1435, 2255, 2870, 3157, 3385, 4510, 4739, 6314, 6770, 7447, 9478, 14894, 15785, 23695, 27757, 31570, 37235, 47390, 52129, 55514, 74470, 104258, 138785, 194299, 260645, 277570, 305327, 388598, 521290, 610654, 971495, 1526635, 1942990, 2137289, 3053270, 4274578, 10686445, 21372890]

約数ペア:

[(1, 21372890), (2, 10686445), (5, 4274578), (7, 3053270), (10, 2137289), (11, 1942990), (14, 1526635), (22, 971495), (35, 610654), (41, 521290), (55, 388598), (70, 305327), (77, 277570), (82, 260645), (110, 194299), (154, 138785), (205, 104258), (287, 74470), (385, 55514), (410, 52129), (451, 47390), (574, 37235), (677, 31570), (770, 27757), (902, 23695), (1354, 15785), (1435, 14894), (2255, 9478), (2870, 7447), (3157, 6770), (3385, 6314), (4510, 4739)]