20921048

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1107

約数の個数: 32

約数和(自身を含む): 40838160

約数和(自身を除く): 19917112

約数列:

[1, 2, 4, 8, 43, 61, 86, 122, 172, 244, 344, 488, 997, 1994, 2623, 3988, 5246, 7976, 10492, 20984, 42871, 60817, 85742, 121634, 171484, 243268, 342968, 486536, 2615131, 5230262, 10460524, 20921048]

約数ペア:

[(1, 20921048), (2, 10460524), (4, 5230262), (8, 2615131), (43, 486536), (61, 342968), (86, 243268), (122, 171484), (172, 121634), (244, 85742), (344, 60817), (488, 42871), (997, 20984), (1994, 10492), (2623, 7976), (3988, 5246)]