21785498

素因数分解:

$2^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 40186368

約数和(自身を除く): 18400870

約数列:

[1, 2, 7, 14, 31, 49, 62, 71, 98, 101, 142, 202, 217, 434, 497, 707, 994, 1414, 1519, 2201, 3038, 3131, 3479, 4402, 4949, 6262, 6958, 7171, 9898, 14342, 15407, 21917, 30814, 43834, 50197, 100394, 107849, 153419, 215698, 222301, 306838, 351379, 444602, 702758, 1556107, 3112214, 10892749, 21785498]

約数ペア:

[(1, 21785498), (2, 10892749), (7, 3112214), (14, 1556107), (31, 702758), (49, 444602), (62, 351379), (71, 306838), (98, 222301), (101, 215698), (142, 153419), (202, 107849), (217, 100394), (434, 50197), (497, 43834), (707, 30814), (994, 21917), (1414, 15407), (1519, 14342), (2201, 9898), (3038, 7171), (3131, 6958), (3479, 6262), (4402, 4949)]