51809440

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1789}}^1$

素因数の和:1985

約数の個数: 48

約数和(自身を含む): 123144840

約数和(自身を除く): 71335400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 724, 905, 1448, 1789, 1810, 2896, 3578, 3620, 5792, 7156, 7240, 8945, 14312, 14480, 17890, 28624, 28960, 35780, 57248, 71560, 143120, 286240, 323809, 647618, 1295236, 1619045, 2590472, 3238090, 5180944, 6476180, 10361888, 12952360, 25904720, 51809440]

約数ペア:

[(1, 51809440), (2, 25904720), (4, 12952360), (5, 10361888), (8, 6476180), (10, 5180944), (16, 3238090), (20, 2590472), (32, 1619045), (40, 1295236), (80, 647618), (160, 323809), (181, 286240), (362, 143120), (724, 71560), (905, 57248), (1448, 35780), (1789, 28960), (1810, 28624), (2896, 17890), (3578, 14480), (3620, 14312), (5792, 8945), (7156, 7240)]