51241540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{571}}^1\times {\mathrm{641}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 123387264

約数和(自身を除く): 72145724

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 571, 641, 1142, 1282, 2284, 2564, 2855, 3205, 3997, 4487, 5710, 6410, 7994, 8974, 11420, 12820, 15988, 17948, 19985, 22435, 39970, 44870, 79940, 89740, 366011, 732022, 1464044, 1830055, 2562077, 3660110, 5124154, 7320220, 10248308, 12810385, 25620770, 51241540]

約数ペア:

[(1, 51241540), (2, 25620770), (4, 12810385), (5, 10248308), (7, 7320220), (10, 5124154), (14, 3660110), (20, 2562077), (28, 1830055), (35, 1464044), (70, 732022), (140, 366011), (571, 89740), (641, 79940), (1142, 44870), (1282, 39970), (2284, 22435), (2564, 19985), (2855, 17948), (3205, 15988), (3997, 12820), (4487, 11420), (5710, 8974), (6410, 7994)]