161213580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81421}}^1$

素因数の和:81447

約数の個数: 72

約数和(自身を含む): 533476944

約数和(自身を除く): 372263364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 81421, 162842, 244263, 325684, 407105, 488526, 732789, 814210, 895631, 977052, 1221315, 1465578, 1628420, 1791262, 2442630, 2686893, 2931156, 3582524, 3663945, 4478155, 4885260, 5373786, 7327890, 8060679, 8956310, 10747572, 13434465, 14655780, 16121358, 17912620, 26868930, 32242716, 40303395, 53737860, 80606790, 161213580]

約数ペア:

[(1, 161213580), (2, 80606790), (3, 53737860), (4, 40303395), (5, 32242716), (6, 26868930), (9, 17912620), (10, 16121358), (11, 14655780), (12, 13434465), (15, 10747572), (18, 8956310), (20, 8060679), (22, 7327890), (30, 5373786), (33, 4885260), (36, 4478155), (44, 3663945), (45, 3582524), (55, 2931156), (60, 2686893), (66, 2442630), (90, 1791262), (99, 1628420), (110, 1465578), (132, 1221315), (165, 977052), (180, 895631), (198, 814210), (220, 732789), (330, 488526), (396, 407105), (495, 325684), (660, 244263), (990, 162842), (1980, 81421)]