20532940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 46103904

約数和(自身を除く): 25570964

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 461, 524, 655, 922, 1310, 1844, 2227, 2305, 2620, 4454, 4610, 7837, 8908, 9220, 11135, 15674, 22270, 31348, 39185, 44540, 60391, 78370, 120782, 156740, 241564, 301955, 603910, 1026647, 1207820, 2053294, 4106588, 5133235, 10266470, 20532940]

約数ペア:

[(1, 20532940), (2, 10266470), (4, 5133235), (5, 4106588), (10, 2053294), (17, 1207820), (20, 1026647), (34, 603910), (68, 301955), (85, 241564), (131, 156740), (170, 120782), (262, 78370), (340, 60391), (461, 44540), (524, 39185), (655, 31348), (922, 22270), (1310, 15674), (1844, 11135), (2227, 9220), (2305, 8908), (2620, 7837), (4454, 4610)]