17908990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:253

約数の個数: 64

約数和(自身を含む): 38086848

約数和(自身を除く): 20177858

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 61, 85, 110, 122, 157, 170, 187, 305, 314, 374, 610, 671, 785, 935, 1037, 1342, 1570, 1727, 1870, 2074, 2669, 3355, 3454, 5185, 5338, 6710, 8635, 9577, 10370, 11407, 13345, 17270, 19154, 22814, 26690, 29359, 47885, 57035, 58718, 95770, 105347, 114070, 146795, 162809, 210694, 293590, 325618, 526735, 814045, 1053470, 1628090, 1790899, 3581798, 8954495, 17908990]

約数ペア:

[(1, 17908990), (2, 8954495), (5, 3581798), (10, 1790899), (11, 1628090), (17, 1053470), (22, 814045), (34, 526735), (55, 325618), (61, 293590), (85, 210694), (110, 162809), (122, 146795), (157, 114070), (170, 105347), (187, 95770), (305, 58718), (314, 57035), (374, 47885), (610, 29359), (671, 26690), (785, 22814), (935, 19154), (1037, 17270), (1342, 13345), (1570, 11407), (1727, 10370), (1870, 9577), (2074, 8635), (2669, 6710), (3355, 5338), (3454, 5185)]