21430773

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{191}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 38578176

約数和(自身を除く): 17147403

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 137, 191, 273, 411, 573, 819, 959, 1233, 1337, 1719, 1781, 2483, 2877, 4011, 5343, 7449, 8631, 12033, 12467, 16029, 17381, 22347, 26167, 37401, 52143, 78501, 112203, 156429, 183169, 235503, 340171, 549507, 1020513, 1648521, 2381197, 3061539, 7143591, 21430773]

約数ペア:

[(1, 21430773), (3, 7143591), (7, 3061539), (9, 2381197), (13, 1648521), (21, 1020513), (39, 549507), (63, 340171), (91, 235503), (117, 183169), (137, 156429), (191, 112203), (273, 78501), (411, 52143), (573, 37401), (819, 26167), (959, 22347), (1233, 17381), (1337, 16029), (1719, 12467), (1781, 12033), (2483, 8631), (2877, 7449), (4011, 5343)]