19542781420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{263167}}^1$

素因数の和:263302

約数の個数: 48

約数和(自身を含む): 42443735040

約数和(自身を除く): 22900953620

約数列:

[1, 2, 4, 5, 10, 20, 47, 79, 94, 158, 188, 235, 316, 395, 470, 790, 940, 1580, 3713, 7426, 14852, 18565, 37130, 74260, 263167, 526334, 1052668, 1315835, 2631670, 5263340, 12368849, 20790193, 24737698, 41580386, 49475396, 61844245, 83160772, 103950965, 123688490, 207901930, 247376980, 415803860, 977139071, 1954278142, 3908556284, 4885695355, 9771390710, 19542781420]

約数ペア:

[(1, 19542781420), (2, 9771390710), (4, 4885695355), (5, 3908556284), (10, 1954278142), (20, 977139071), (47, 415803860), (79, 247376980), (94, 207901930), (158, 123688490), (188, 103950965), (235, 83160772), (316, 61844245), (395, 49475396), (470, 41580386), (790, 24737698), (940, 20790193), (1580, 12368849), (3713, 5263340), (7426, 2631670), (14852, 1315835), (18565, 1052668), (37130, 526334), (74260, 263167)]