21706875

素因数分解:

$3^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{227}}^1$

素因数の和:270

約数の個数: 60

約数和(自身を含む): 41667912

約数和(自身を除く): 19961037

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 227, 255, 375, 425, 625, 681, 765, 1125, 1135, 1275, 1875, 2043, 2125, 3405, 3825, 3859, 5625, 5675, 6375, 10215, 10625, 11577, 17025, 19125, 19295, 28375, 31875, 34731, 51075, 57885, 85125, 95625, 96475, 141875, 173655, 255375, 289425, 425625, 482375, 868275, 1276875, 1447125, 2411875, 4341375, 7235625, 21706875]

約数ペア:

[(1, 21706875), (3, 7235625), (5, 4341375), (9, 2411875), (15, 1447125), (17, 1276875), (25, 868275), (45, 482375), (51, 425625), (75, 289425), (85, 255375), (125, 173655), (153, 141875), (225, 96475), (227, 95625), (255, 85125), (375, 57885), (425, 51075), (625, 34731), (681, 31875), (765, 28375), (1125, 19295), (1135, 19125), (1275, 17025), (1875, 11577), (2043, 10625), (2125, 10215), (3405, 6375), (3825, 5675), (3859, 5625)]