81945880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1723}}^1$

素因数の和:1804

約数の個数: 64

約数和(自身を含む): 195501600

約数和(自身を除く): 113555720

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 41, 58, 82, 116, 145, 164, 205, 232, 290, 328, 410, 580, 820, 1160, 1189, 1640, 1723, 2378, 3446, 4756, 5945, 6892, 8615, 9512, 11890, 13784, 17230, 23780, 34460, 47560, 49967, 68920, 70643, 99934, 141286, 199868, 249835, 282572, 353215, 399736, 499670, 565144, 706430, 999340, 1412860, 1998680, 2048647, 2825720, 4097294, 8194588, 10243235, 16389176, 20486470, 40972940, 81945880]

約数ペア:

[(1, 81945880), (2, 40972940), (4, 20486470), (5, 16389176), (8, 10243235), (10, 8194588), (20, 4097294), (29, 2825720), (40, 2048647), (41, 1998680), (58, 1412860), (82, 999340), (116, 706430), (145, 565144), (164, 499670), (205, 399736), (232, 353215), (290, 282572), (328, 249835), (410, 199868), (580, 141286), (820, 99934), (1160, 70643), (1189, 68920), (1640, 49967), (1723, 47560), (2378, 34460), (3446, 23780), (4756, 17230), (5945, 13784), (6892, 11890), (8615, 9512)]