28380440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1217}}^1$

素因数の和:1292

約数の個数: 64

約数和(自身を含む): 71033760

約数和(自身を除く): 42653320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 53, 55, 88, 106, 110, 212, 220, 265, 424, 440, 530, 583, 1060, 1166, 1217, 2120, 2332, 2434, 2915, 4664, 4868, 5830, 6085, 9736, 11660, 12170, 13387, 23320, 24340, 26774, 48680, 53548, 64501, 66935, 107096, 129002, 133870, 258004, 267740, 322505, 516008, 535480, 645010, 709511, 1290020, 1419022, 2580040, 2838044, 3547555, 5676088, 7095110, 14190220, 28380440]

約数ペア:

[(1, 28380440), (2, 14190220), (4, 7095110), (5, 5676088), (8, 3547555), (10, 2838044), (11, 2580040), (20, 1419022), (22, 1290020), (40, 709511), (44, 645010), (53, 535480), (55, 516008), (88, 322505), (106, 267740), (110, 258004), (212, 133870), (220, 129002), (265, 107096), (424, 66935), (440, 64501), (530, 53548), (583, 48680), (1060, 26774), (1166, 24340), (1217, 23320), (2120, 13387), (2332, 12170), (2434, 11660), (2915, 9736), (4664, 6085), (4868, 5830)]