20521628

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{991}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 37330944

約数和(自身を除く): 16809316

約数列:

[1, 2, 4, 31, 62, 124, 167, 334, 668, 991, 1982, 3964, 5177, 10354, 20708, 30721, 61442, 122884, 165497, 330994, 661988, 5130407, 10260814, 20521628]

約数ペア:

[(1, 20521628), (2, 10260814), (4, 5130407), (31, 661988), (62, 330994), (124, 165497), (167, 122884), (334, 61442), (668, 30721), (991, 20708), (1982, 10354), (3964, 5177)]