21788830

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:913

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 24750530

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 53, 70, 98, 106, 245, 265, 371, 490, 530, 742, 839, 1678, 1855, 2597, 3710, 4195, 5194, 5873, 8390, 11746, 12985, 25970, 29365, 41111, 44467, 58730, 82222, 88934, 205555, 222335, 311269, 411110, 444670, 622538, 1556345, 2178883, 3112690, 4357766, 10894415, 21788830]

約数ペア:

[(1, 21788830), (2, 10894415), (5, 4357766), (7, 3112690), (10, 2178883), (14, 1556345), (35, 622538), (49, 444670), (53, 411110), (70, 311269), (98, 222335), (106, 205555), (245, 88934), (265, 82222), (371, 58730), (490, 44467), (530, 41111), (742, 29365), (839, 25970), (1678, 12985), (1855, 11746), (2597, 8390), (3710, 5873), (4195, 5194)]