20887688

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1049}}^1$

素因数の和:1205

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20692312

約数列:

[1, 2, 4, 8, 19, 38, 76, 131, 152, 262, 524, 1048, 1049, 2098, 2489, 4196, 4978, 8392, 9956, 19912, 19931, 39862, 79724, 137419, 159448, 274838, 549676, 1099352, 2610961, 5221922, 10443844, 20887688]

約数ペア:

[(1, 20887688), (2, 10443844), (4, 5221922), (8, 2610961), (19, 1099352), (38, 549676), (76, 274838), (131, 159448), (152, 137419), (262, 79724), (524, 39862), (1048, 19931), (1049, 19912), (2098, 9956), (2489, 8392), (4196, 4978)]