16815780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{907}}^1$

素因数の和:1025

約数の個数: 72

約数和(自身を含む): 51559872

約数和(自身を除く): 34744092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 907, 927, 1030, 1236, 1545, 1814, 1854, 2060, 2721, 3090, 3628, 3708, 4535, 4635, 5442, 6180, 8163, 9070, 9270, 10884, 13605, 16326, 18140, 18540, 27210, 32652, 40815, 54420, 81630, 93421, 163260, 186842, 280263, 373684, 467105, 560526, 840789, 934210, 1121052, 1401315, 1681578, 1868420, 2802630, 3363156, 4203945, 5605260, 8407890, 16815780]

約数ペア:

[(1, 16815780), (2, 8407890), (3, 5605260), (4, 4203945), (5, 3363156), (6, 2802630), (9, 1868420), (10, 1681578), (12, 1401315), (15, 1121052), (18, 934210), (20, 840789), (30, 560526), (36, 467105), (45, 373684), (60, 280263), (90, 186842), (103, 163260), (180, 93421), (206, 81630), (309, 54420), (412, 40815), (515, 32652), (618, 27210), (907, 18540), (927, 18140), (1030, 16326), (1236, 13605), (1545, 10884), (1814, 9270), (1854, 9070), (2060, 8163), (2721, 6180), (3090, 5442), (3628, 4635), (3708, 4535)]