19811475

素因数分解:

$3^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{461}}^1$

素因数の和:668

約数の個数: 36

約数和(自身を含む): 35747712

約数和(自身を除く): 15936237

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 191, 225, 461, 573, 955, 1383, 1719, 2305, 2865, 4149, 4775, 6915, 8595, 11525, 14325, 20745, 34575, 42975, 88051, 103725, 264153, 440255, 792459, 1320765, 2201275, 3962295, 6603825, 19811475]

約数ペア:

[(1, 19811475), (3, 6603825), (5, 3962295), (9, 2201275), (15, 1320765), (25, 792459), (45, 440255), (75, 264153), (191, 103725), (225, 88051), (461, 42975), (573, 34575), (955, 20745), (1383, 14325), (1719, 11525), (2305, 8595), (2865, 6915), (4149, 4775)]