81578420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{52973}}^1$

素因数の和:53000

約数の個数: 48

約数和(自身を含む): 213591168

約数和(自身を除く): 132012748

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 52973, 105946, 211892, 264865, 370811, 529730, 582703, 741622, 1059460, 1165406, 1483244, 1854055, 2330812, 2913515, 3708110, 4078921, 5827030, 7416220, 8157842, 11654060, 16315684, 20394605, 40789210, 81578420]

約数ペア:

[(1, 81578420), (2, 40789210), (4, 20394605), (5, 16315684), (7, 11654060), (10, 8157842), (11, 7416220), (14, 5827030), (20, 4078921), (22, 3708110), (28, 2913515), (35, 2330812), (44, 1854055), (55, 1483244), (70, 1165406), (77, 1059460), (110, 741622), (140, 582703), (154, 529730), (220, 370811), (308, 264865), (385, 211892), (770, 105946), (1540, 52973)]