20391768

素因数分解:

$2^3\times 3^2\times {\mathrm{71}}^1\times {\mathrm{3989}}^1$

素因数の和:4072

約数の個数: 48

約数和(自身を含む): 56019600

約数和(自身を除く): 35627832

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 71, 72, 142, 213, 284, 426, 568, 639, 852, 1278, 1704, 2556, 3989, 5112, 7978, 11967, 15956, 23934, 31912, 35901, 47868, 71802, 95736, 143604, 283219, 287208, 566438, 849657, 1132876, 1699314, 2265752, 2548971, 3398628, 5097942, 6797256, 10195884, 20391768]

約数ペア:

[(1, 20391768), (2, 10195884), (3, 6797256), (4, 5097942), (6, 3398628), (8, 2548971), (9, 2265752), (12, 1699314), (18, 1132876), (24, 849657), (36, 566438), (71, 287208), (72, 283219), (142, 143604), (213, 95736), (284, 71802), (426, 47868), (568, 35901), (639, 31912), (852, 23934), (1278, 15956), (1704, 11967), (2556, 7978), (3989, 5112)]