1991815196

素因数分解:

$2^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{110977}}^1$

素因数の和:111629

約数の個数: 24

約数和(自身を含む): 3989881056

約数和(自身を除く): 1998065860

約数列:

[1, 2, 4, 7, 14, 28, 641, 1282, 2564, 4487, 8974, 17948, 110977, 221954, 443908, 776839, 1553678, 3107356, 71136257, 142272514, 284545028, 497953799, 995907598, 1991815196]

約数ペア:

[(1, 1991815196), (2, 995907598), (4, 497953799), (7, 284545028), (14, 142272514), (28, 71136257), (641, 3107356), (1282, 1553678), (2564, 776839), (4487, 443908), (8974, 221954), (17948, 110977)]