20121856245

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{122273}}^1$

素因数の和:122363

約数の個数: 64

約数和(自身を含む): 38032104960

約数和(自身を除く): 17910248715

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 53, 69, 115, 135, 159, 207, 265, 345, 477, 621, 795, 1035, 1219, 1431, 2385, 3105, 3657, 6095, 7155, 10971, 18285, 32913, 54855, 122273, 164565, 366819, 611365, 1100457, 1834095, 2812279, 3301371, 5502285, 6480469, 8436837, 14061395, 16506855, 19441407, 25310511, 32402345, 42184185, 58324221, 75931533, 97207035, 126552555, 149050787, 174972663, 291621105, 379657665, 447152361, 745253935, 874863315, 1341457083, 2235761805, 4024371249, 6707285415, 20121856245]

約数ペア:

[(1, 20121856245), (3, 6707285415), (5, 4024371249), (9, 2235761805), (15, 1341457083), (23, 874863315), (27, 745253935), (45, 447152361), (53, 379657665), (69, 291621105), (115, 174972663), (135, 149050787), (159, 126552555), (207, 97207035), (265, 75931533), (345, 58324221), (477, 42184185), (621, 32402345), (795, 25310511), (1035, 19441407), (1219, 16506855), (1431, 14061395), (2385, 8436837), (3105, 6480469), (3657, 5502285), (6095, 3301371), (7155, 2812279), (10971, 1834095), (18285, 1100457), (32913, 611365), (54855, 366819), (122273, 164565)]