51105190

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:688

約数の個数: 32

約数和(自身を含む): 94190400

約数和(自身を除く): 43085210

約数列:

[1, 2, 5, 10, 61, 122, 199, 305, 398, 421, 610, 842, 995, 1990, 2105, 4210, 12139, 24278, 25681, 51362, 60695, 83779, 121390, 128405, 167558, 256810, 418895, 837790, 5110519, 10221038, 25552595, 51105190]

約数ペア:

[(1, 51105190), (2, 25552595), (5, 10221038), (10, 5110519), (61, 837790), (122, 418895), (199, 256810), (305, 167558), (398, 128405), (421, 121390), (610, 83779), (842, 60695), (995, 51362), (1990, 25681), (2105, 24278), (4210, 12139)]