25204120

素因数分解:

$2^3\times 5^1\times {\mathrm{641}}^1\times {\mathrm{983}}^1$

素因数の和:1635

約数の個数: 32

約数和(自身を含む): 56855520

約数和(自身を除く): 31651400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 641, 983, 1282, 1966, 2564, 3205, 3932, 4915, 5128, 6410, 7864, 9830, 12820, 19660, 25640, 39320, 630103, 1260206, 2520412, 3150515, 5040824, 6301030, 12602060, 25204120]

約数ペア:

[(1, 25204120), (2, 12602060), (4, 6301030), (5, 5040824), (8, 3150515), (10, 2520412), (20, 1260206), (40, 630103), (641, 39320), (983, 25640), (1282, 19660), (1966, 12820), (2564, 9830), (3205, 7864), (3932, 6410), (4915, 5128)]