390097928

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{72671}}^1$

素因数の和:72749

約数の個数: 32

約数和(自身を含む): 811019520

約数和(自身を除く): 420921592

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 5368, 72671, 145342, 290684, 581368, 799381, 1598762, 3197524, 4432931, 6395048, 8865862, 17731724, 35463448, 48762241, 97524482, 195048964, 390097928]

約数ペア:

[(1, 390097928), (2, 195048964), (4, 97524482), (8, 48762241), (11, 35463448), (22, 17731724), (44, 8865862), (61, 6395048), (88, 4432931), (122, 3197524), (244, 1598762), (488, 799381), (671, 581368), (1342, 290684), (2684, 145342), (5368, 72671)]