80491990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1553}}^1$

素因数の和:1704

約数の個数: 32

約数和(自身を含む): 149034816

約数和(自身を除く): 68542826

約数列:

[1, 2, 5, 10, 71, 73, 142, 146, 355, 365, 710, 730, 1553, 3106, 5183, 7765, 10366, 15530, 25915, 51830, 110263, 113369, 220526, 226738, 551315, 566845, 1102630, 1133690, 8049199, 16098398, 40245995, 80491990]

約数ペア:

[(1, 80491990), (2, 40245995), (5, 16098398), (10, 8049199), (71, 1133690), (73, 1102630), (142, 566845), (146, 551315), (355, 226738), (365, 220526), (710, 113369), (730, 110263), (1553, 51830), (3106, 25915), (5183, 15530), (7765, 10366)]