25319500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:739

約数の個数: 48

約数和(自身を含む): 56085120

約数和(自身を除く): 30765620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 641, 790, 1282, 1580, 1975, 2564, 3205, 3950, 6410, 7900, 9875, 12820, 16025, 19750, 32050, 39500, 50639, 64100, 80125, 101278, 160250, 202556, 253195, 320500, 506390, 1012780, 1265975, 2531950, 5063900, 6329875, 12659750, 25319500]

約数ペア:

[(1, 25319500), (2, 12659750), (4, 6329875), (5, 5063900), (10, 2531950), (20, 1265975), (25, 1012780), (50, 506390), (79, 320500), (100, 253195), (125, 202556), (158, 160250), (250, 101278), (316, 80125), (395, 64100), (500, 50639), (641, 39500), (790, 32050), (1282, 19750), (1580, 16025), (1975, 12820), (2564, 9875), (3205, 7900), (3950, 6410)]