12947800

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1579}}^1$

素因数の和:1636

約数の個数: 48

約数和(自身を含む): 30857400

約数和(自身を除く): 17909600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1579, 1640, 2050, 3158, 4100, 6316, 7895, 8200, 12632, 15790, 31580, 39475, 63160, 64739, 78950, 129478, 157900, 258956, 315800, 323695, 517912, 647390, 1294780, 1618475, 2589560, 3236950, 6473900, 12947800]

約数ペア:

[(1, 12947800), (2, 6473900), (4, 3236950), (5, 2589560), (8, 1618475), (10, 1294780), (20, 647390), (25, 517912), (40, 323695), (41, 315800), (50, 258956), (82, 157900), (100, 129478), (164, 78950), (200, 64739), (205, 63160), (328, 39475), (410, 31580), (820, 15790), (1025, 12632), (1579, 8200), (1640, 7895), (2050, 6316), (3158, 4100)]