20723120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23549}}^1$

素因数の和:23573

約数の個数: 40

約数和(自身を含む): 52563600

約数和(自身を除く): 31840480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23549, 47098, 94196, 117745, 188392, 235490, 259039, 376784, 470980, 518078, 941960, 1036156, 1295195, 1883920, 2072312, 2590390, 4144624, 5180780, 10361560, 20723120]

約数ペア:

[(1, 20723120), (2, 10361560), (4, 5180780), (5, 4144624), (8, 2590390), (10, 2072312), (11, 1883920), (16, 1295195), (20, 1036156), (22, 941960), (40, 518078), (44, 470980), (55, 376784), (80, 259039), (88, 235490), (110, 188392), (176, 117745), (220, 94196), (440, 47098), (880, 23549)]