20730969

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1621}}^1$

素因数の和:1670

約数の個数: 36

約数和(自身を含む): 36057060

約数和(自身を除く): 15326091

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1621, 1827, 4263, 4863, 11347, 12789, 14589, 34041, 47009, 79429, 102123, 141027, 238287, 329063, 423081, 714861, 987189, 2303441, 2961567, 6910323, 20730969]

約数ペア:

[(1, 20730969), (3, 6910323), (7, 2961567), (9, 2303441), (21, 987189), (29, 714861), (49, 423081), (63, 329063), (87, 238287), (147, 141027), (203, 102123), (261, 79429), (441, 47009), (609, 34041), (1421, 14589), (1621, 12789), (1827, 11347), (4263, 4863)]