20928816

素因数分解:

$2^4\times 3^2\times {\mathrm{101}}^1\times {\mathrm{1439}}^1$

素因数の和:1554

約数の個数: 60

約数和(自身を含む): 59192640

約数和(自身を除く): 38263824

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 101, 144, 202, 303, 404, 606, 808, 909, 1212, 1439, 1616, 1818, 2424, 2878, 3636, 4317, 4848, 5756, 7272, 8634, 11512, 12951, 14544, 17268, 23024, 25902, 34536, 51804, 69072, 103608, 145339, 207216, 290678, 436017, 581356, 872034, 1162712, 1308051, 1744068, 2325424, 2616102, 3488136, 5232204, 6976272, 10464408, 20928816]

約数ペア:

[(1, 20928816), (2, 10464408), (3, 6976272), (4, 5232204), (6, 3488136), (8, 2616102), (9, 2325424), (12, 1744068), (16, 1308051), (18, 1162712), (24, 872034), (36, 581356), (48, 436017), (72, 290678), (101, 207216), (144, 145339), (202, 103608), (303, 69072), (404, 51804), (606, 34536), (808, 25902), (909, 23024), (1212, 17268), (1439, 14544), (1616, 12951), (1818, 11512), (2424, 8634), (2878, 7272), (3636, 5756), (4317, 4848)]