2101840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 80

約数和(自身を含む): 5499648

約数和(自身を除く): 3397808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 47, 52, 65, 80, 86, 94, 104, 130, 172, 188, 208, 215, 235, 260, 344, 376, 430, 470, 520, 559, 611, 688, 752, 860, 940, 1040, 1118, 1222, 1720, 1880, 2021, 2236, 2444, 2795, 3055, 3440, 3760, 4042, 4472, 4888, 5590, 6110, 8084, 8944, 9776, 10105, 11180, 12220, 16168, 20210, 22360, 24440, 26273, 32336, 40420, 44720, 48880, 52546, 80840, 105092, 131365, 161680, 210184, 262730, 420368, 525460, 1050920, 2101840]

約数ペア:

[(1, 2101840), (2, 1050920), (4, 525460), (5, 420368), (8, 262730), (10, 210184), (13, 161680), (16, 131365), (20, 105092), (26, 80840), (40, 52546), (43, 48880), (47, 44720), (52, 40420), (65, 32336), (80, 26273), (86, 24440), (94, 22360), (104, 20210), (130, 16168), (172, 12220), (188, 11180), (208, 10105), (215, 9776), (235, 8944), (260, 8084), (344, 6110), (376, 5590), (430, 4888), (470, 4472), (520, 4042), (559, 3760), (611, 3440), (688, 3055), (752, 2795), (860, 2444), (940, 2236), (1040, 2021), (1118, 1880), (1222, 1720)]