20916207

素因数分解:

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

素因数の和:232

約数の個数: 36

約数和(自身を含む): 34605480

約数和(自身を除く): 13689273

約数列:

[1, 3, 9, 13, 19, 39, 57, 97, 117, 171, 247, 291, 741, 873, 1261, 1843, 2223, 3783, 5529, 9409, 11349, 16587, 23959, 28227, 71877, 84681, 122317, 178771, 215631, 366951, 536313, 1100853, 1608939, 2324023, 6972069, 20916207]

約数ペア:

[(1, 20916207), (3, 6972069), (9, 2324023), (13, 1608939), (19, 1100853), (39, 536313), (57, 366951), (97, 215631), (117, 178771), (171, 122317), (247, 84681), (291, 71877), (741, 28227), (873, 23959), (1261, 16587), (1843, 11349), (2223, 9409), (3783, 5529)]