25280720

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1259}}^1$

素因数の和:1523

約数の個数: 40

約数和(自身を含む): 59058720

約数和(自身を除く): 33778000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1259, 2008, 2510, 2518, 4016, 5020, 5036, 6295, 10040, 10072, 12590, 20080, 20144, 25180, 50360, 100720, 316009, 632018, 1264036, 1580045, 2528072, 3160090, 5056144, 6320180, 12640360, 25280720]

約数ペア:

[(1, 25280720), (2, 12640360), (4, 6320180), (5, 5056144), (8, 3160090), (10, 2528072), (16, 1580045), (20, 1264036), (40, 632018), (80, 316009), (251, 100720), (502, 50360), (1004, 25180), (1255, 20144), (1259, 20080), (2008, 12590), (2510, 10072), (2518, 10040), (4016, 6295), (5020, 5036)]