20492600

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1297}}^1$

素因数の和:1392

約数の個数: 48

約数和(自身を含む): 48285600

約数和(自身を除く): 27793000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1297, 1580, 1975, 2594, 3160, 3950, 5188, 6485, 7900, 10376, 12970, 15800, 25940, 32425, 51880, 64850, 102463, 129700, 204926, 259400, 409852, 512315, 819704, 1024630, 2049260, 2561575, 4098520, 5123150, 10246300, 20492600]

約数ペア:

[(1, 20492600), (2, 10246300), (4, 5123150), (5, 4098520), (8, 2561575), (10, 2049260), (20, 1024630), (25, 819704), (40, 512315), (50, 409852), (79, 259400), (100, 204926), (158, 129700), (200, 102463), (316, 64850), (395, 51880), (632, 32425), (790, 25940), (1297, 15800), (1580, 12970), (1975, 10376), (2594, 7900), (3160, 6485), (3950, 5188)]