215877207

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{2389}}^1$

素因数の和:2743

約数の個数: 32

約数和(自身を含む): 355479040

約数和(自身を除く): 139601833

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 331, 993, 2317, 2389, 4303, 6951, 7167, 12909, 16723, 30121, 31057, 50169, 90363, 93171, 217399, 652197, 790759, 2372277, 5535313, 10279867, 16605939, 30839601, 71959069, 215877207]

約数ペア:

[(1, 215877207), (3, 71959069), (7, 30839601), (13, 16605939), (21, 10279867), (39, 5535313), (91, 2372277), (273, 790759), (331, 652197), (993, 217399), (2317, 93171), (2389, 90363), (4303, 50169), (6951, 31057), (7167, 30121), (12909, 16723)]