66254480

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2129}}^1$

素因数の和:2531

約数の個数: 40

約数和(自身を含む): 154510200

約数和(自身を除く): 88255720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 2129, 3112, 3890, 4258, 6224, 7780, 8516, 10645, 15560, 17032, 21290, 31120, 34064, 42580, 85160, 170320, 828181, 1656362, 3312724, 4140905, 6625448, 8281810, 13250896, 16563620, 33127240, 66254480]

約数ペア:

[(1, 66254480), (2, 33127240), (4, 16563620), (5, 13250896), (8, 8281810), (10, 6625448), (16, 4140905), (20, 3312724), (40, 1656362), (80, 828181), (389, 170320), (778, 85160), (1556, 42580), (1945, 34064), (2129, 31120), (3112, 21290), (3890, 17032), (4258, 15560), (6224, 10645), (7780, 8516)]