320139981

素因数分解:

$3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{13697}}^1$

素因数の和:13770

約数の個数: 36

約数和(自身を含む): 548111772

約数和(自身を除く): 227971791

約数列:

[1, 3, 7, 9, 21, 49, 53, 63, 147, 159, 371, 441, 477, 1113, 2597, 3339, 7791, 13697, 23373, 41091, 95879, 123273, 287637, 671153, 725941, 862911, 2013459, 2177823, 5081587, 6040377, 6533469, 15244761, 35571109, 45734283, 106713327, 320139981]

約数ペア:

[(1, 320139981), (3, 106713327), (7, 45734283), (9, 35571109), (21, 15244761), (49, 6533469), (53, 6040377), (63, 5081587), (147, 2177823), (159, 2013459), (371, 862911), (441, 725941), (477, 671153), (1113, 287637), (2597, 123273), (3339, 95879), (7791, 41091), (13697, 23373)]