21574610

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:670

約数の個数: 32

約数和(自身を含む): 40252464

約数和(自身を除く): 18677854

約数列:

[1, 2, 5, 10, 41, 82, 101, 202, 205, 410, 505, 521, 1010, 1042, 2605, 4141, 5210, 8282, 20705, 21361, 41410, 42722, 52621, 105242, 106805, 213610, 263105, 526210, 2157461, 4314922, 10787305, 21574610]

約数ペア:

[(1, 21574610), (2, 10787305), (5, 4314922), (10, 2157461), (41, 526210), (82, 263105), (101, 213610), (202, 106805), (205, 105242), (410, 52621), (505, 42722), (521, 41410), (1010, 21361), (1042, 20705), (2605, 8282), (4141, 5210)]