21660028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{6217}}^1$

素因数の和:6301

約数の個数: 24

約数和(自身を含む): 41436752

約数和(自身を除く): 19776724

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 6217, 12434, 24868, 80821, 161642, 323284, 416539, 833078, 1666156, 5415007, 10830014, 21660028]

約数ペア:

[(1, 21660028), (2, 10830014), (4, 5415007), (13, 1666156), (26, 833078), (52, 416539), (67, 323284), (134, 161642), (268, 80821), (871, 24868), (1742, 12434), (3484, 6217)]