200917820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{367}}^1\times {\mathrm{883}}^1$

素因数の和:1290

約数の個数: 48

約数和(自身を含む): 437219328

約数和(自身を除く): 236301508

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 367, 620, 734, 883, 1468, 1766, 1835, 3532, 3670, 4415, 7340, 8830, 11377, 17660, 22754, 27373, 45508, 54746, 56885, 109492, 113770, 136865, 227540, 273730, 324061, 547460, 648122, 1296244, 1620305, 3240610, 6481220, 10045891, 20091782, 40183564, 50229455, 100458910, 200917820]

約数ペア:

[(1, 200917820), (2, 100458910), (4, 50229455), (5, 40183564), (10, 20091782), (20, 10045891), (31, 6481220), (62, 3240610), (124, 1620305), (155, 1296244), (310, 648122), (367, 547460), (620, 324061), (734, 273730), (883, 227540), (1468, 136865), (1766, 113770), (1835, 109492), (3532, 56885), (3670, 54746), (4415, 45508), (7340, 27373), (8830, 22754), (11377, 17660)]