21625155

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 39480480

約数和(自身を除く): 17855325

約数列:

[1, 3, 5, 9, 15, 29, 45, 73, 87, 145, 219, 227, 261, 365, 435, 657, 681, 1095, 1135, 1305, 2043, 2117, 3285, 3405, 6351, 6583, 10215, 10585, 16571, 19053, 19749, 31755, 32915, 49713, 59247, 82855, 95265, 98745, 149139, 248565, 296235, 480559, 745695, 1441677, 2402795, 4325031, 7208385, 21625155]

約数ペア:

[(1, 21625155), (3, 7208385), (5, 4325031), (9, 2402795), (15, 1441677), (29, 745695), (45, 480559), (73, 296235), (87, 248565), (145, 149139), (219, 98745), (227, 95265), (261, 82855), (365, 59247), (435, 49713), (657, 32915), (681, 31755), (1095, 19749), (1135, 19053), (1305, 16571), (2043, 10585), (2117, 10215), (3285, 6583), (3405, 6351)]