205400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:108

約数の個数: 48

約数和(自身を含む): 520800

約数和(自身を除く): 315400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 79, 100, 104, 130, 158, 200, 260, 316, 325, 395, 520, 632, 650, 790, 1027, 1300, 1580, 1975, 2054, 2600, 3160, 3950, 4108, 5135, 7900, 8216, 10270, 15800, 20540, 25675, 41080, 51350, 102700, 205400]

約数ペア:

[(1, 205400), (2, 102700), (4, 51350), (5, 41080), (8, 25675), (10, 20540), (13, 15800), (20, 10270), (25, 8216), (26, 7900), (40, 5135), (50, 4108), (52, 3950), (65, 3160), (79, 2600), (100, 2054), (104, 1975), (130, 1580), (158, 1300), (200, 1027), (260, 790), (316, 650), (325, 632), (395, 520)]