890910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:553

約数の個数: 48

約数和(自身を含む): 2442960

約数和(自身を除く): 1552050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 38, 45, 57, 90, 95, 114, 171, 190, 285, 342, 521, 570, 855, 1042, 1563, 1710, 2605, 3126, 4689, 5210, 7815, 9378, 9899, 15630, 19798, 23445, 29697, 46890, 49495, 59394, 89091, 98990, 148485, 178182, 296970, 445455, 890910]

約数ペア:

[(1, 890910), (2, 445455), (3, 296970), (5, 178182), (6, 148485), (9, 98990), (10, 89091), (15, 59394), (18, 49495), (19, 46890), (30, 29697), (38, 23445), (45, 19798), (57, 15630), (90, 9899), (95, 9378), (114, 7815), (171, 5210), (190, 4689), (285, 3126), (342, 2605), (521, 1710), (570, 1563), (855, 1042)]