21649660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 47527200

約数和(自身を除く): 25877540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 163, 229, 290, 326, 458, 580, 652, 815, 916, 1145, 1630, 2290, 3260, 4580, 4727, 6641, 9454, 13282, 18908, 23635, 26564, 33205, 37327, 47270, 66410, 74654, 94540, 132820, 149308, 186635, 373270, 746540, 1082483, 2164966, 4329932, 5412415, 10824830, 21649660]

約数ペア:

[(1, 21649660), (2, 10824830), (4, 5412415), (5, 4329932), (10, 2164966), (20, 1082483), (29, 746540), (58, 373270), (116, 186635), (145, 149308), (163, 132820), (229, 94540), (290, 74654), (326, 66410), (458, 47270), (580, 37327), (652, 33205), (815, 26564), (916, 23635), (1145, 18908), (1630, 13282), (2290, 9454), (3260, 6641), (4580, 4727)]