20619340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4751}}^1$

素因数の和:4798

約数の個数: 48

約数和(自身を含む): 51093504

約数和(自身を除く): 30474164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4751, 9502, 19004, 23755, 33257, 47510, 66514, 95020, 133028, 147281, 166285, 294562, 332570, 589124, 665140, 736405, 1030967, 1472810, 2061934, 2945620, 4123868, 5154835, 10309670, 20619340]

約数ペア:

[(1, 20619340), (2, 10309670), (4, 5154835), (5, 4123868), (7, 2945620), (10, 2061934), (14, 1472810), (20, 1030967), (28, 736405), (31, 665140), (35, 589124), (62, 332570), (70, 294562), (124, 166285), (140, 147281), (155, 133028), (217, 95020), (310, 66514), (434, 47510), (620, 33257), (868, 23755), (1085, 19004), (2170, 9502), (4340, 4751)]