18991272964

素因数分解:

$2^2\times {\mathrm{661}}^1\times {\mathrm{983}}^1\times {\mathrm{7307}}^1$

素因数の和:8955

約数の個数: 24

約数和(自身を含む): 33323427648

約数和(自身を除く): 14332154684

約数列:

[1, 2, 4, 661, 983, 1322, 1966, 2644, 3932, 7307, 14614, 29228, 649763, 1299526, 2599052, 4829927, 7182781, 9659854, 14365562, 19319708, 28731124, 4747818241, 9495636482, 18991272964]

約数ペア:

[(1, 18991272964), (2, 9495636482), (4, 4747818241), (661, 28731124), (983, 19319708), (1322, 14365562), (1966, 9659854), (2644, 7182781), (3932, 4829927), (7307, 2599052), (14614, 1299526), (29228, 649763)]