25380520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1559}}^1$

素因数の和:1618

約数の個数: 64

約数和(自身を含む): 64022400

約数和(自身を除く): 38641880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1480, 1559, 1628, 2035, 3118, 3256, 4070, 6236, 7795, 8140, 12472, 15590, 16280, 17149, 31180, 34298, 57683, 62360, 68596, 85745, 115366, 137192, 171490, 230732, 288415, 342980, 461464, 576830, 634513, 685960, 1153660, 1269026, 2307320, 2538052, 3172565, 5076104, 6345130, 12690260, 25380520]

約数ペア:

[(1, 25380520), (2, 12690260), (4, 6345130), (5, 5076104), (8, 3172565), (10, 2538052), (11, 2307320), (20, 1269026), (22, 1153660), (37, 685960), (40, 634513), (44, 576830), (55, 461464), (74, 342980), (88, 288415), (110, 230732), (148, 171490), (185, 137192), (220, 115366), (296, 85745), (370, 68596), (407, 62360), (440, 57683), (740, 34298), (814, 31180), (1480, 17149), (1559, 16280), (1628, 15590), (2035, 12472), (3118, 8140), (3256, 7795), (4070, 6236)]