128464780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{3631}}^1$

素因数の和:3730

約数の個数: 48

約数和(自身を含む): 283731840

約数和(自身を除く): 155267060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 61, 116, 122, 145, 244, 290, 305, 580, 610, 1220, 1769, 3538, 3631, 7076, 7262, 8845, 14524, 17690, 18155, 35380, 36310, 72620, 105299, 210598, 221491, 421196, 442982, 526495, 885964, 1052990, 1107455, 2105980, 2214910, 4429820, 6423239, 12846478, 25692956, 32116195, 64232390, 128464780]

約数ペア:

[(1, 128464780), (2, 64232390), (4, 32116195), (5, 25692956), (10, 12846478), (20, 6423239), (29, 4429820), (58, 2214910), (61, 2105980), (116, 1107455), (122, 1052990), (145, 885964), (244, 526495), (290, 442982), (305, 421196), (580, 221491), (610, 210598), (1220, 105299), (1769, 72620), (3538, 36310), (3631, 35380), (7076, 18155), (7262, 17690), (8845, 14524)]