216173811

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{1223}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 347811840

約数和(自身を除く): 131638029

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 443, 1223, 1329, 3101, 3669, 8417, 8561, 9303, 23237, 25251, 25683, 58919, 69711, 162659, 176757, 487977, 541789, 1625367, 3792523, 10293991, 11377569, 30881973, 72057937, 216173811]

約数ペア:

[(1, 216173811), (3, 72057937), (7, 30881973), (19, 11377569), (21, 10293991), (57, 3792523), (133, 1625367), (399, 541789), (443, 487977), (1223, 176757), (1329, 162659), (3101, 69711), (3669, 58919), (8417, 25683), (8561, 25251), (9303, 23237)]