28505920

素因数分解:

$2^6\times 5^1\times {\mathrm{229}}^1\times {\mathrm{389}}^1$

素因数の和:635

約数の個数: 56

約数和(自身を含む): 68351400

約数和(自身を除く): 39845480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 229, 320, 389, 458, 778, 916, 1145, 1556, 1832, 1945, 2290, 3112, 3664, 3890, 4580, 6224, 7328, 7780, 9160, 12448, 14656, 15560, 18320, 24896, 31120, 36640, 62240, 73280, 89081, 124480, 178162, 356324, 445405, 712648, 890810, 1425296, 1781620, 2850592, 3563240, 5701184, 7126480, 14252960, 28505920]

約数ペア:

[(1, 28505920), (2, 14252960), (4, 7126480), (5, 5701184), (8, 3563240), (10, 2850592), (16, 1781620), (20, 1425296), (32, 890810), (40, 712648), (64, 445405), (80, 356324), (160, 178162), (229, 124480), (320, 89081), (389, 73280), (458, 62240), (778, 36640), (916, 31120), (1145, 24896), (1556, 18320), (1832, 15560), (1945, 14656), (2290, 12448), (3112, 9160), (3664, 7780), (3890, 7328), (4580, 6224)]