20481968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1669}}^1$

素因数の和:1749

約数の個数: 40

約数和(自身を含む): 43486800

約数和(自身を除く): 23004832

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1669, 3068, 3338, 6136, 6676, 12272, 13352, 21697, 26704, 43394, 86788, 98471, 173576, 196942, 347152, 393884, 787768, 1280123, 1575536, 2560246, 5120492, 10240984, 20481968]

約数ペア:

[(1, 20481968), (2, 10240984), (4, 5120492), (8, 2560246), (13, 1575536), (16, 1280123), (26, 787768), (52, 393884), (59, 347152), (104, 196942), (118, 173576), (208, 98471), (236, 86788), (472, 43394), (767, 26704), (944, 21697), (1534, 13352), (1669, 12272), (3068, 6676), (3338, 6136)]