21264975

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3259}}^1$

素因数の和:3304

約数の個数: 36

約数和(自身を含む): 39413400

約数和(自身を除く): 18148425

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3259, 6525, 9777, 16295, 29331, 48885, 81475, 94511, 146655, 244425, 283533, 472555, 733275, 850599, 1417665, 2362775, 4252995, 7088325, 21264975]

約数ペア:

[(1, 21264975), (3, 7088325), (5, 4252995), (9, 2362775), (15, 1417665), (25, 850599), (29, 733275), (45, 472555), (75, 283533), (87, 244425), (145, 146655), (225, 94511), (261, 81475), (435, 48885), (725, 29331), (1305, 16295), (2175, 9777), (3259, 6525)]