220961013

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1039}}^1$

素因数の和:1122

約数の個数: 64

約数和(自身を含む): 391372800

約数和(自身を除く): 170411787

約数列:

[1, 3, 7, 13, 19, 21, 39, 41, 57, 91, 123, 133, 247, 273, 287, 399, 533, 741, 779, 861, 1039, 1599, 1729, 2337, 3117, 3731, 5187, 5453, 7273, 10127, 11193, 13507, 16359, 19741, 21819, 30381, 40521, 42599, 59223, 70889, 94549, 127797, 138187, 212667, 256633, 283647, 298193, 414561, 553787, 769899, 809381, 894579, 1661361, 1796431, 2428143, 3876509, 5389293, 5665667, 10521953, 11629527, 16997001, 31565859, 73653671, 220961013]

約数ペア:

[(1, 220961013), (3, 73653671), (7, 31565859), (13, 16997001), (19, 11629527), (21, 10521953), (39, 5665667), (41, 5389293), (57, 3876509), (91, 2428143), (123, 1796431), (133, 1661361), (247, 894579), (273, 809381), (287, 769899), (399, 553787), (533, 414561), (741, 298193), (779, 283647), (861, 256633), (1039, 212667), (1599, 138187), (1729, 127797), (2337, 94549), (3117, 70889), (3731, 59223), (5187, 42599), (5453, 40521), (7273, 30381), (10127, 21819), (11193, 19741), (13507, 16359)]