21576990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31271}}^1$

素因数の和:31304

約数の個数: 32

約数和(自身を含む): 54038016

約数和(自身を除く): 32461026

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31271, 62542, 93813, 156355, 187626, 312710, 469065, 719233, 938130, 1438466, 2157699, 3596165, 4315398, 7192330, 10788495, 21576990]

約数ペア:

[(1, 21576990), (2, 10788495), (3, 7192330), (5, 4315398), (6, 3596165), (10, 2157699), (15, 1438466), (23, 938130), (30, 719233), (46, 469065), (69, 312710), (115, 187626), (138, 156355), (230, 93813), (345, 62542), (690, 31271)]