20732860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^3\times {\mathrm{211}}^1$

素因数の和:271

約数の個数: 48

約数和(自身を含む): 46478880

約数和(自身を除く): 25746020

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 211, 289, 340, 422, 578, 844, 1055, 1156, 1445, 2110, 2890, 3587, 4220, 4913, 5780, 7174, 9826, 14348, 17935, 19652, 24565, 35870, 49130, 60979, 71740, 98260, 121958, 243916, 304895, 609790, 1036643, 1219580, 2073286, 4146572, 5183215, 10366430, 20732860]

約数ペア:

[(1, 20732860), (2, 10366430), (4, 5183215), (5, 4146572), (10, 2073286), (17, 1219580), (20, 1036643), (34, 609790), (68, 304895), (85, 243916), (170, 121958), (211, 98260), (289, 71740), (340, 60979), (422, 49130), (578, 35870), (844, 24565), (1055, 19652), (1156, 17935), (1445, 14348), (2110, 9826), (2890, 7174), (3587, 5780), (4220, 4913)]