18801406

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:376

約数の個数: 32

約数和(自身を含む): 31667328

約数和(自身を除く): 12865922

約数列:

[1, 2, 13, 26, 43, 67, 86, 134, 251, 502, 559, 871, 1118, 1742, 2881, 3263, 5762, 6526, 10793, 16817, 21586, 33634, 37453, 74906, 140309, 218621, 280618, 437242, 723131, 1446262, 9400703, 18801406]

約数ペア:

[(1, 18801406), (2, 9400703), (13, 1446262), (26, 723131), (43, 437242), (67, 280618), (86, 218621), (134, 140309), (251, 74906), (502, 37453), (559, 33634), (871, 21586), (1118, 16817), (1742, 10793), (2881, 6526), (3263, 5762)]