215631

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:135

約数の個数: 24

約数和(自身を含む): 356720

約数和(自身を除く): 141089

約数列:

[1, 3, 9, 13, 19, 39, 57, 97, 117, 171, 247, 291, 741, 873, 1261, 1843, 2223, 3783, 5529, 11349, 16587, 23959, 71877, 215631]

約数ペア:

[(1, 215631), (3, 71877), (9, 23959), (13, 16587), (19, 11349), (39, 5529), (57, 3783), (97, 2223), (117, 1843), (171, 1261), (247, 873), (291, 741)]