21089900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16223}}^1$

素因数の和:16250

約数の個数: 36

約数和(自身を含む): 49288512

約数和(自身を除く): 28198612

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16223, 32446, 64892, 81115, 162230, 210899, 324460, 405575, 421798, 811150, 843596, 1054495, 1622300, 2108990, 4217980, 5272475, 10544950, 21089900]

約数ペア:

[(1, 21089900), (2, 10544950), (4, 5272475), (5, 4217980), (10, 2108990), (13, 1622300), (20, 1054495), (25, 843596), (26, 811150), (50, 421798), (52, 405575), (65, 324460), (100, 210899), (130, 162230), (260, 81115), (325, 64892), (650, 32446), (1300, 16223)]