72128840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 194987520

約数和(自身を除く): 122858680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 61, 70, 82, 103, 122, 140, 164, 205, 206, 244, 280, 287, 305, 328, 410, 412, 427, 488, 515, 574, 610, 721, 820, 824, 854, 1030, 1148, 1220, 1435, 1442, 1640, 1708, 2060, 2135, 2296, 2440, 2501, 2870, 2884, 3416, 3605, 4120, 4223, 4270, 5002, 5740, 5768, 6283, 7210, 8446, 8540, 10004, 11480, 12505, 12566, 14420, 16892, 17080, 17507, 20008, 21115, 25010, 25132, 28840, 29561, 31415, 33784, 35014, 42230, 43981, 50020, 50264, 59122, 62830, 70028, 84460, 87535, 87962, 100040, 118244, 125660, 140056, 147805, 168920, 175070, 175924, 219905, 236488, 251320, 257603, 295610, 350140, 351848, 439810, 515206, 591220, 700280, 879620, 1030412, 1182440, 1288015, 1759240, 1803221, 2060824, 2576030, 3606442, 5152060, 7212884, 9016105, 10304120, 14425768, 18032210, 36064420, 72128840]

約数ペア:

[(1, 72128840), (2, 36064420), (4, 18032210), (5, 14425768), (7, 10304120), (8, 9016105), (10, 7212884), (14, 5152060), (20, 3606442), (28, 2576030), (35, 2060824), (40, 1803221), (41, 1759240), (56, 1288015), (61, 1182440), (70, 1030412), (82, 879620), (103, 700280), (122, 591220), (140, 515206), (164, 439810), (205, 351848), (206, 350140), (244, 295610), (280, 257603), (287, 251320), (305, 236488), (328, 219905), (410, 175924), (412, 175070), (427, 168920), (488, 147805), (515, 140056), (574, 125660), (610, 118244), (721, 100040), (820, 87962), (824, 87535), (854, 84460), (1030, 70028), (1148, 62830), (1220, 59122), (1435, 50264), (1442, 50020), (1640, 43981), (1708, 42230), (2060, 35014), (2135, 33784), (2296, 31415), (2440, 29561), (2501, 28840), (2870, 25132), (2884, 25010), (3416, 21115), (3605, 20008), (4120, 17507), (4223, 17080), (4270, 16892), (5002, 14420), (5740, 12566), (5768, 12505), (6283, 11480), (7210, 10004), (8446, 8540)]