21562120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:922

約数の個数: 64

約数和(自身を含む): 52818480

約数和(自身を除く): 31256360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 148, 170, 185, 296, 340, 370, 629, 680, 740, 857, 1258, 1480, 1714, 2516, 3145, 3428, 4285, 5032, 6290, 6856, 8570, 12580, 14569, 17140, 25160, 29138, 31709, 34280, 58276, 63418, 72845, 116552, 126836, 145690, 158545, 253672, 291380, 317090, 539053, 582760, 634180, 1078106, 1268360, 2156212, 2695265, 4312424, 5390530, 10781060, 21562120]

約数ペア:

[(1, 21562120), (2, 10781060), (4, 5390530), (5, 4312424), (8, 2695265), (10, 2156212), (17, 1268360), (20, 1078106), (34, 634180), (37, 582760), (40, 539053), (68, 317090), (74, 291380), (85, 253672), (136, 158545), (148, 145690), (170, 126836), (185, 116552), (296, 72845), (340, 63418), (370, 58276), (629, 34280), (680, 31709), (740, 29138), (857, 25160), (1258, 17140), (1480, 14569), (1714, 12580), (2516, 8570), (3145, 6856), (3428, 6290), (4285, 5032)]