25801720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2143}}^1$

素因数の和:2204

約数の個数: 64

約数和(自身を含む): 67921920

約数和(自身を除く): 42120200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2143, 2408, 3010, 4286, 6020, 8572, 10715, 12040, 15001, 17144, 21430, 30002, 42860, 60004, 75005, 85720, 92149, 120008, 150010, 184298, 300020, 368596, 460745, 600040, 645043, 737192, 921490, 1290086, 1842980, 2580172, 3225215, 3685960, 5160344, 6450430, 12900860, 25801720]

約数ペア:

[(1, 25801720), (2, 12900860), (4, 6450430), (5, 5160344), (7, 3685960), (8, 3225215), (10, 2580172), (14, 1842980), (20, 1290086), (28, 921490), (35, 737192), (40, 645043), (43, 600040), (56, 460745), (70, 368596), (86, 300020), (140, 184298), (172, 150010), (215, 120008), (280, 92149), (301, 85720), (344, 75005), (430, 60004), (602, 42860), (860, 30002), (1204, 21430), (1505, 17144), (1720, 15001), (2143, 12040), (2408, 10715), (3010, 8572), (4286, 6020)]