261521964

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{660409}}^1$

素因数の和:660430

約数の個数: 36

約数和(自身を含む): 721167720

約数和(自身を除く): 459645756

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 198, 396, 660409, 1320818, 1981227, 2641636, 3962454, 5943681, 7264499, 7924908, 11887362, 14528998, 21793497, 23774724, 29057996, 43586994, 65380491, 87173988, 130760982, 261521964]

約数ペア:

[(1, 261521964), (2, 130760982), (3, 87173988), (4, 65380491), (6, 43586994), (9, 29057996), (11, 23774724), (12, 21793497), (18, 14528998), (22, 11887362), (33, 7924908), (36, 7264499), (44, 5943681), (66, 3962454), (99, 2641636), (132, 1981227), (198, 1320818), (396, 660409)]