647966140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{25981}}^1$

素因数の和:26062

約数の個数: 48

約数和(自身を含む): 1440442080

約数和(自身を除く): 792475940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 1247, 2494, 4988, 6235, 12470, 24940, 25981, 51962, 103924, 129905, 259810, 519620, 753449, 1117183, 1506898, 2234366, 3013796, 3767245, 4468732, 5585915, 7534490, 11171830, 15068980, 22343660, 32398307, 64796614, 129593228, 161991535, 323983070, 647966140]

約数ペア:

[(1, 647966140), (2, 323983070), (4, 161991535), (5, 129593228), (10, 64796614), (20, 32398307), (29, 22343660), (43, 15068980), (58, 11171830), (86, 7534490), (116, 5585915), (145, 4468732), (172, 3767245), (215, 3013796), (290, 2234366), (430, 1506898), (580, 1117183), (860, 753449), (1247, 519620), (2494, 259810), (4988, 129905), (6235, 103924), (12470, 51962), (24940, 25981)]