21753915

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1163}}^1$

素因数の和:1243

約数の個数: 32

約数和(自身を含む): 36875520

約数和(自身を除く): 15121605

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1163, 1247, 3489, 3741, 5815, 6235, 17445, 18705, 33727, 50009, 101181, 150027, 168635, 250045, 505905, 750135, 1450261, 4350783, 7251305, 21753915]

約数ペア:

[(1, 21753915), (3, 7251305), (5, 4350783), (15, 1450261), (29, 750135), (43, 505905), (87, 250045), (129, 168635), (145, 150027), (215, 101181), (435, 50009), (645, 33727), (1163, 18705), (1247, 17445), (3489, 6235), (3741, 5815)]