1254418640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{257053}}^1$

素因数の和:257127

約数の個数: 40

約数和(自身を含む): 2964346728

約数和(自身を除く): 1709928088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 257053, 514106, 1028212, 1285265, 2056424, 2570530, 4112848, 5141060, 10282120, 15680233, 20564240, 31360466, 62720932, 78401165, 125441864, 156802330, 250883728, 313604660, 627209320, 1254418640]

約数ペア:

[(1, 1254418640), (2, 627209320), (4, 313604660), (5, 250883728), (8, 156802330), (10, 125441864), (16, 78401165), (20, 62720932), (40, 31360466), (61, 20564240), (80, 15680233), (122, 10282120), (244, 5141060), (305, 4112848), (488, 2570530), (610, 2056424), (976, 1285265), (1220, 1028212), (2440, 514106), (4880, 257053)]