20492770

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:810

約数の個数: 32

約数和(自身を含む): 38828160

約数和(自身を除く): 18335390

約数列:

[1, 2, 5, 10, 23, 46, 115, 139, 230, 278, 641, 695, 1282, 1390, 3197, 3205, 6394, 6410, 14743, 15985, 29486, 31970, 73715, 89099, 147430, 178198, 445495, 890990, 2049277, 4098554, 10246385, 20492770]

約数ペア:

[(1, 20492770), (2, 10246385), (5, 4098554), (10, 2049277), (23, 890990), (46, 445495), (115, 178198), (139, 147430), (230, 89099), (278, 73715), (641, 31970), (695, 29486), (1282, 15985), (1390, 14743), (3197, 6410), (3205, 6394)]