21081530

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{461}}^1$

素因数の和:754

約数の個数: 32

約数和(自身を含む): 40415760

約数和(自身を除く): 19334230

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 269, 461, 538, 922, 1345, 2305, 2690, 4573, 4610, 7837, 9146, 15674, 22865, 39185, 45730, 78370, 124009, 248018, 620045, 1240090, 2108153, 4216306, 10540765, 21081530]

約数ペア:

[(1, 21081530), (2, 10540765), (5, 4216306), (10, 2108153), (17, 1240090), (34, 620045), (85, 248018), (170, 124009), (269, 78370), (461, 45730), (538, 39185), (922, 22865), (1345, 15674), (2305, 9146), (2690, 7837), (4573, 4610)]