21645017398

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{431}}^1\times {\mathrm{16729}}^1$

素因数の和:17260

約数の個数: 32

約数和(自身を含む): 34691328000

約数和(自身を除く): 13046310602

約数列:

[1, 2, 19, 38, 79, 158, 431, 862, 1501, 3002, 8189, 16378, 16729, 33458, 34049, 68098, 317851, 635702, 646931, 1293862, 1321591, 2643182, 7210199, 14420398, 25110229, 50220458, 136993781, 273987562, 569605721, 1139211442, 10822508699, 21645017398]

約数ペア:

[(1, 21645017398), (2, 10822508699), (19, 1139211442), (38, 569605721), (79, 273987562), (158, 136993781), (431, 50220458), (862, 25110229), (1501, 14420398), (3002, 7210199), (8189, 2643182), (16378, 1321591), (16729, 1293862), (33458, 646931), (34049, 635702), (68098, 317851)]