20954817

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{599}}^1$

素因数の和:654

約数の個数: 36

約数和(自身を含む): 34257600

約数和(自身を除く): 13302783

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 599, 897, 1521, 1797, 2691, 3887, 5391, 7787, 11661, 13777, 23361, 34983, 41331, 70083, 101231, 123993, 179101, 303693, 537303, 911079, 1611909, 2328313, 6984939, 20954817]

約数ペア:

[(1, 20954817), (3, 6984939), (9, 2328313), (13, 1611909), (23, 911079), (39, 537303), (69, 303693), (117, 179101), (169, 123993), (207, 101231), (299, 70083), (507, 41331), (599, 34983), (897, 23361), (1521, 13777), (1797, 11661), (2691, 7787), (3887, 5391)]