21656618

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 35768640

約数和(自身を除く): 14112022

約数列:

[1, 2, 19, 37, 38, 73, 74, 146, 211, 422, 703, 1387, 1406, 2701, 2774, 4009, 5402, 7807, 8018, 15403, 15614, 30806, 51319, 102638, 148333, 292657, 296666, 569911, 585314, 1139822, 10828309, 21656618]

約数ペア:

[(1, 21656618), (2, 10828309), (19, 1139822), (37, 585314), (38, 569911), (73, 296666), (74, 292657), (146, 148333), (211, 102638), (422, 51319), (703, 30806), (1387, 15614), (1406, 15403), (2701, 8018), (2774, 7807), (4009, 5402)]