18704920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2767}}^1$

素因数の和:2804

約数の個数: 48

約数和(自身を含む): 45588960

約数和(自身を除く): 26884040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2767, 3380, 5534, 6760, 11068, 13835, 22136, 27670, 35971, 55340, 71942, 110680, 143884, 179855, 287768, 359710, 467623, 719420, 935246, 1438840, 1870492, 2338115, 3740984, 4676230, 9352460, 18704920]

約数ペア:

[(1, 18704920), (2, 9352460), (4, 4676230), (5, 3740984), (8, 2338115), (10, 1870492), (13, 1438840), (20, 935246), (26, 719420), (40, 467623), (52, 359710), (65, 287768), (104, 179855), (130, 143884), (169, 110680), (260, 71942), (338, 55340), (520, 35971), (676, 27670), (845, 22136), (1352, 13835), (1690, 11068), (2767, 6760), (3380, 5534)]