20997360

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9721}}^1$

素因数の和:9743

約数の個数: 80

約数和(自身を含む): 72331680

約数和(自身を除く): 51334320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9721, 19442, 29163, 38884, 48605, 58326, 77768, 87489, 97210, 116652, 145815, 155536, 174978, 194420, 233304, 262467, 291630, 349956, 388840, 437445, 466608, 524934, 583260, 699912, 777680, 874890, 1049868, 1166520, 1312335, 1399824, 1749780, 2099736, 2333040, 2624670, 3499560, 4199472, 5249340, 6999120, 10498680, 20997360]

約数ペア:

[(1, 20997360), (2, 10498680), (3, 6999120), (4, 5249340), (5, 4199472), (6, 3499560), (8, 2624670), (9, 2333040), (10, 2099736), (12, 1749780), (15, 1399824), (16, 1312335), (18, 1166520), (20, 1049868), (24, 874890), (27, 777680), (30, 699912), (36, 583260), (40, 524934), (45, 466608), (48, 437445), (54, 388840), (60, 349956), (72, 291630), (80, 262467), (90, 233304), (108, 194420), (120, 174978), (135, 155536), (144, 145815), (180, 116652), (216, 97210), (240, 87489), (270, 77768), (360, 58326), (432, 48605), (540, 38884), (720, 29163), (1080, 19442), (2160, 9721)]