221477960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{503359}}^1$

素因数の和:503381

約数の個数: 32

約数和(自身を含む): 543628800

約数和(自身を除く): 322150840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 503359, 1006718, 2013436, 2516795, 4026872, 5033590, 5536949, 10067180, 11073898, 20134360, 22147796, 27684745, 44295592, 55369490, 110738980, 221477960]

約数ペア:

[(1, 221477960), (2, 110738980), (4, 55369490), (5, 44295592), (8, 27684745), (10, 22147796), (11, 20134360), (20, 11073898), (22, 10067180), (40, 5536949), (44, 5033590), (55, 4026872), (88, 2516795), (110, 2013436), (220, 1006718), (440, 503359)]