21972717

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2803}}^1$

素因数の和:2889

約数の個数: 24

約数和(自身を含む): 34702304

約数和(自身を除く): 12729587

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 2613, 2803, 7839, 8409, 25227, 36439, 109317, 187801, 327951, 563403, 1690209, 2441413, 7324239, 21972717]

約数ペア:

[(1, 21972717), (3, 7324239), (9, 2441413), (13, 1690209), (39, 563403), (67, 327951), (117, 187801), (201, 109317), (603, 36439), (871, 25227), (2613, 8409), (2803, 7839)]