21239588

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1091}}^1$

素因数の和:1283

約数の個数: 24

約数和(自身を含む): 38648064

約数和(自身を除く): 17408476

約数列:

[1, 2, 4, 31, 62, 124, 157, 314, 628, 1091, 2182, 4364, 4867, 9734, 19468, 33821, 67642, 135284, 171287, 342574, 685148, 5309897, 10619794, 21239588]

約数ペア:

[(1, 21239588), (2, 10619794), (4, 5309897), (31, 685148), (62, 342574), (124, 171287), (157, 135284), (314, 67642), (628, 33821), (1091, 19468), (2182, 9734), (4364, 4867)]