20953680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7937}}^1$

素因数の和:7964

約数の個数: 80

約数和(自身を含む): 70870464

約数和(自身を除く): 49916784

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 7937, 15874, 23811, 31748, 39685, 47622, 63496, 79370, 87307, 95244, 119055, 126992, 158740, 174614, 190488, 238110, 261921, 317480, 349228, 380976, 436535, 476220, 523842, 634960, 698456, 873070, 952440, 1047684, 1309605, 1396912, 1746140, 1904880, 2095368, 2619210, 3492280, 4190736, 5238420, 6984560, 10476840, 20953680]

約数ペア:

[(1, 20953680), (2, 10476840), (3, 6984560), (4, 5238420), (5, 4190736), (6, 3492280), (8, 2619210), (10, 2095368), (11, 1904880), (12, 1746140), (15, 1396912), (16, 1309605), (20, 1047684), (22, 952440), (24, 873070), (30, 698456), (33, 634960), (40, 523842), (44, 476220), (48, 436535), (55, 380976), (60, 349228), (66, 317480), (80, 261921), (88, 238110), (110, 190488), (120, 174614), (132, 158740), (165, 126992), (176, 119055), (220, 95244), (240, 87307), (264, 79370), (330, 63496), (440, 47622), (528, 39685), (660, 31748), (880, 23811), (1320, 15874), (2640, 7937)]