51997840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 125991936

約数和(自身を除く): 73994096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 83, 164, 166, 191, 205, 328, 332, 382, 410, 415, 656, 664, 764, 820, 830, 955, 1328, 1528, 1640, 1660, 1910, 3056, 3280, 3320, 3403, 3820, 6640, 6806, 7640, 7831, 13612, 15280, 15662, 15853, 17015, 27224, 31324, 31706, 34030, 39155, 54448, 62648, 63412, 68060, 78310, 79265, 125296, 126824, 136120, 156620, 158530, 253648, 272240, 313240, 317060, 626480, 634120, 649973, 1268240, 1299946, 2599892, 3249865, 5199784, 6499730, 10399568, 12999460, 25998920, 51997840]

約数ペア:

[(1, 51997840), (2, 25998920), (4, 12999460), (5, 10399568), (8, 6499730), (10, 5199784), (16, 3249865), (20, 2599892), (40, 1299946), (41, 1268240), (80, 649973), (82, 634120), (83, 626480), (164, 317060), (166, 313240), (191, 272240), (205, 253648), (328, 158530), (332, 156620), (382, 136120), (410, 126824), (415, 125296), (656, 79265), (664, 78310), (764, 68060), (820, 63412), (830, 62648), (955, 54448), (1328, 39155), (1528, 34030), (1640, 31706), (1660, 31324), (1910, 27224), (3056, 17015), (3280, 15853), (3320, 15662), (3403, 15280), (3820, 13612), (6640, 7831), (6806, 7640)]