20187780818

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{821}}^1\times {\mathrm{2969}}^1$

素因数の和:3934

約数の個数: 32

約数和(自身を含む): 31376101680

約数和(自身を除く): 11188320862

約数列:

[1, 2, 41, 82, 101, 202, 821, 1642, 2969, 4141, 5938, 8282, 33661, 67322, 82921, 121729, 165842, 243458, 299869, 599738, 2437549, 3399761, 4875098, 6799522, 12294629, 24589258, 99939509, 199879018, 246192449, 492384898, 10093890409, 20187780818]

約数ペア:

[(1, 20187780818), (2, 10093890409), (41, 492384898), (82, 246192449), (101, 199879018), (202, 99939509), (821, 24589258), (1642, 12294629), (2969, 6799522), (4141, 4875098), (5938, 3399761), (8282, 2437549), (33661, 599738), (67322, 299869), (82921, 243458), (121729, 165842)]