9917990

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 18480960

約数和(自身を除く): 8562970

約数列:

[1, 2, 5, 10, 61, 71, 122, 142, 229, 305, 355, 458, 610, 710, 1145, 2290, 4331, 8662, 13969, 16259, 21655, 27938, 32518, 43310, 69845, 81295, 139690, 162590, 991799, 1983598, 4958995, 9917990]

約数ペア:

[(1, 9917990), (2, 4958995), (5, 1983598), (10, 991799), (61, 162590), (71, 139690), (122, 81295), (142, 69845), (229, 43310), (305, 32518), (355, 27938), (458, 21655), (610, 16259), (710, 13969), (1145, 8662), (2290, 4331)]