81387460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1289}}^1$

素因数の和:1357

約数の個数: 96

約数和(自身を含む): 218453760

約数和(自身を除く): 137066300

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 41, 44, 55, 70, 77, 82, 110, 140, 154, 164, 205, 220, 287, 308, 385, 410, 451, 574, 770, 820, 902, 1148, 1289, 1435, 1540, 1804, 2255, 2578, 2870, 3157, 4510, 5156, 5740, 6314, 6445, 9020, 9023, 12628, 12890, 14179, 15785, 18046, 25780, 28358, 31570, 36092, 45115, 52849, 56716, 63140, 70895, 90230, 99253, 105698, 141790, 180460, 198506, 211396, 264245, 283580, 369943, 397012, 496265, 528490, 581339, 739886, 992530, 1056980, 1162678, 1479772, 1849715, 1985060, 2325356, 2906695, 3699430, 4069373, 5813390, 7398860, 8138746, 11626780, 16277492, 20346865, 40693730, 81387460]

約数ペア:

[(1, 81387460), (2, 40693730), (4, 20346865), (5, 16277492), (7, 11626780), (10, 8138746), (11, 7398860), (14, 5813390), (20, 4069373), (22, 3699430), (28, 2906695), (35, 2325356), (41, 1985060), (44, 1849715), (55, 1479772), (70, 1162678), (77, 1056980), (82, 992530), (110, 739886), (140, 581339), (154, 528490), (164, 496265), (205, 397012), (220, 369943), (287, 283580), (308, 264245), (385, 211396), (410, 198506), (451, 180460), (574, 141790), (770, 105698), (820, 99253), (902, 90230), (1148, 70895), (1289, 63140), (1435, 56716), (1540, 52849), (1804, 45115), (2255, 36092), (2578, 31570), (2870, 28358), (3157, 25780), (4510, 18046), (5156, 15785), (5740, 14179), (6314, 12890), (6445, 12628), (9020, 9023)]