19886240

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11299}}^1$

素因数の和:11325

約数の個数: 48

約数和(自身を含む): 51256800

約数和(自身を除く): 31370560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11299, 22598, 45196, 56495, 90392, 112990, 124289, 180784, 225980, 248578, 361568, 451960, 497156, 621445, 903920, 994312, 1242890, 1807840, 1988624, 2485780, 3977248, 4971560, 9943120, 19886240]

約数ペア:

[(1, 19886240), (2, 9943120), (4, 4971560), (5, 3977248), (8, 2485780), (10, 1988624), (11, 1807840), (16, 1242890), (20, 994312), (22, 903920), (32, 621445), (40, 497156), (44, 451960), (55, 361568), (80, 248578), (88, 225980), (110, 180784), (160, 124289), (176, 112990), (220, 90392), (352, 56495), (440, 45196), (880, 22598), (1760, 11299)]