21815914

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{229}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 36432000

約数和(自身を除く): 14616086

約数列:

[1, 2, 19, 23, 38, 46, 109, 218, 229, 437, 458, 874, 2071, 2507, 4142, 4351, 5014, 5267, 8702, 10534, 24961, 47633, 49922, 95266, 100073, 200146, 474259, 574103, 948518, 1148206, 10907957, 21815914]

約数ペア:

[(1, 21815914), (2, 10907957), (19, 1148206), (23, 948518), (38, 574103), (46, 474259), (109, 200146), (218, 100073), (229, 95266), (437, 49922), (458, 47633), (874, 24961), (2071, 10534), (2507, 8702), (4142, 5267), (4351, 5014)]