21303231

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 31051776

約数和(自身を除く): 9748545

約数列:

[1, 3, 31, 37, 41, 93, 111, 123, 151, 453, 1147, 1271, 1517, 3441, 3813, 4551, 4681, 5587, 6191, 14043, 16761, 18573, 47027, 141081, 173197, 191921, 229067, 519591, 575763, 687201, 7101077, 21303231]

約数ペア:

[(1, 21303231), (3, 7101077), (31, 687201), (37, 575763), (41, 519591), (93, 229067), (111, 191921), (123, 173197), (151, 141081), (453, 47027), (1147, 18573), (1271, 16761), (1517, 14043), (3441, 6191), (3813, 5587), (4551, 4681)]