18638775

素因数分解:

$3^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{521}}^1$

素因数の和:593

約数の個数: 48

約数和(自身を含む): 34953120

約数和(自身を除く): 16314345

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 53, 75, 135, 159, 225, 265, 477, 521, 675, 795, 1325, 1431, 1563, 2385, 2605, 3975, 4689, 7155, 7815, 11925, 13025, 14067, 23445, 27613, 35775, 39075, 70335, 82839, 117225, 138065, 248517, 351675, 414195, 690325, 745551, 1242585, 2070975, 3727755, 6212925, 18638775]

約数ペア:

[(1, 18638775), (3, 6212925), (5, 3727755), (9, 2070975), (15, 1242585), (25, 745551), (27, 690325), (45, 414195), (53, 351675), (75, 248517), (135, 138065), (159, 117225), (225, 82839), (265, 70335), (477, 39075), (521, 35775), (675, 27613), (795, 23445), (1325, 14067), (1431, 13025), (1563, 11925), (2385, 7815), (2605, 7155), (3975, 4689)]