21666148

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 45337600

約数和(自身を除く): 23671452

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 109, 124, 217, 218, 229, 434, 436, 458, 763, 868, 916, 1526, 1603, 3052, 3206, 3379, 6412, 6758, 7099, 13516, 14198, 23653, 24961, 28396, 47306, 49693, 49922, 94612, 99386, 99844, 174727, 198772, 349454, 698908, 773791, 1547582, 3095164, 5416537, 10833074, 21666148]

約数ペア:

[(1, 21666148), (2, 10833074), (4, 5416537), (7, 3095164), (14, 1547582), (28, 773791), (31, 698908), (62, 349454), (109, 198772), (124, 174727), (217, 99844), (218, 99386), (229, 94612), (434, 49922), (436, 49693), (458, 47306), (763, 28396), (868, 24961), (916, 23653), (1526, 14198), (1603, 13516), (3052, 7099), (3206, 6758), (3379, 6412)]