20019986

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{283}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 35770368

約数和(自身を除く): 15750382

約数列:

[1, 2, 7, 14, 31, 62, 163, 217, 283, 326, 434, 566, 1141, 1981, 2282, 3962, 5053, 8773, 10106, 17546, 35371, 46129, 61411, 70742, 92258, 122822, 322903, 645806, 1429999, 2859998, 10009993, 20019986]

約数ペア:

[(1, 20019986), (2, 10009993), (7, 2859998), (14, 1429999), (31, 645806), (62, 322903), (163, 122822), (217, 92258), (283, 70742), (326, 61411), (434, 46129), (566, 35371), (1141, 17546), (1981, 10106), (2282, 8773), (3962, 5053)]