209219980

素因数分解:

$2^2\times 5^1\times {\mathrm{1321}}^1\times {\mathrm{7919}}^1$

素因数の和:9249

約数の個数: 24

約数和(自身を含む): 439750080

約数和(自身を除く): 230530100

約数列:

[1, 2, 4, 5, 10, 20, 1321, 2642, 5284, 6605, 7919, 13210, 15838, 26420, 31676, 39595, 79190, 158380, 10460999, 20921998, 41843996, 52304995, 104609990, 209219980]

約数ペア:

[(1, 209219980), (2, 104609990), (4, 52304995), (5, 41843996), (10, 20921998), (20, 10460999), (1321, 158380), (2642, 79190), (5284, 39595), (6605, 31676), (7919, 26420), (13210, 15838)]