28921250

素因数分解:

$2^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{1361}}^1$

素因数の和:1400

約数の個数: 40

約数和(自身を含む): 57440988

約数和(自身を除く): 28519738

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 425, 625, 850, 1250, 1361, 2125, 2722, 4250, 6805, 10625, 13610, 21250, 23137, 34025, 46274, 68050, 115685, 170125, 231370, 340250, 578425, 850625, 1156850, 1701250, 2892125, 5784250, 14460625, 28921250]

約数ペア:

[(1, 28921250), (2, 14460625), (5, 5784250), (10, 2892125), (17, 1701250), (25, 1156850), (34, 850625), (50, 578425), (85, 340250), (125, 231370), (170, 170125), (250, 115685), (425, 68050), (625, 46274), (850, 34025), (1250, 23137), (1361, 21250), (2125, 13610), (2722, 10625), (4250, 6805)]