20271400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1283}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 47764800

約数和(自身を除く): 27493400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1283, 1580, 1975, 2566, 3160, 3950, 5132, 6415, 7900, 10264, 12830, 15800, 25660, 32075, 51320, 64150, 101357, 128300, 202714, 256600, 405428, 506785, 810856, 1013570, 2027140, 2533925, 4054280, 5067850, 10135700, 20271400]

約数ペア:

[(1, 20271400), (2, 10135700), (4, 5067850), (5, 4054280), (8, 2533925), (10, 2027140), (20, 1013570), (25, 810856), (40, 506785), (50, 405428), (79, 256600), (100, 202714), (158, 128300), (200, 101357), (316, 64150), (395, 51320), (632, 32075), (790, 25660), (1283, 15800), (1580, 12830), (1975, 10264), (2566, 7900), (3160, 6415), (3950, 5132)]