28704260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{977}}^1$

素因数の和:1112

約数の個数: 48

約数和(自身を含む): 65557296

約数和(自身を除く): 36853036

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 113, 130, 226, 260, 452, 565, 977, 1130, 1469, 1954, 2260, 2938, 3908, 4885, 5876, 7345, 9770, 12701, 14690, 19540, 25402, 29380, 50804, 63505, 110401, 127010, 220802, 254020, 441604, 552005, 1104010, 1435213, 2208020, 2870426, 5740852, 7176065, 14352130, 28704260]

約数ペア:

[(1, 28704260), (2, 14352130), (4, 7176065), (5, 5740852), (10, 2870426), (13, 2208020), (20, 1435213), (26, 1104010), (52, 552005), (65, 441604), (113, 254020), (130, 220802), (226, 127010), (260, 110401), (452, 63505), (565, 50804), (977, 29380), (1130, 25402), (1469, 19540), (1954, 14690), (2260, 12701), (2938, 9770), (3908, 7345), (4885, 5876)]