15721405720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{2837}}^1$

素因数の和:3029

約数の個数: 128

約数和(自身を含む): 37761292800

約数和(自身を除く): 22039887080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 109, 124, 155, 164, 205, 218, 248, 310, 328, 410, 436, 545, 620, 820, 872, 1090, 1240, 1271, 1640, 2180, 2542, 2837, 3379, 4360, 4469, 5084, 5674, 6355, 6758, 8938, 10168, 11348, 12710, 13516, 14185, 16895, 17876, 22345, 22696, 25420, 27032, 28370, 33790, 35752, 44690, 50840, 56740, 67580, 87947, 89380, 113480, 116317, 135160, 138539, 175894, 178760, 232634, 277078, 309233, 351788, 439735, 465268, 554156, 581585, 618466, 692695, 703576, 879470, 930536, 1108312, 1163170, 1236932, 1385390, 1546165, 1758940, 2326340, 2473864, 2770780, 3092330, 3517880, 3605827, 4652680, 5541560, 6184660, 7211654, 9586223, 12369320, 12678553, 14423308, 18029135, 19172446, 25357106, 28846616, 36058270, 38344892, 47931115, 50714212, 63392765, 72116540, 76689784, 95862230, 101428424, 126785530, 144233080, 191724460, 253571060, 383448920, 393035143, 507142120, 786070286, 1572140572, 1965175715, 3144281144, 3930351430, 7860702860, 15721405720]

約数ペア:

[(1, 15721405720), (2, 7860702860), (4, 3930351430), (5, 3144281144), (8, 1965175715), (10, 1572140572), (20, 786070286), (31, 507142120), (40, 393035143), (41, 383448920), (62, 253571060), (82, 191724460), (109, 144233080), (124, 126785530), (155, 101428424), (164, 95862230), (205, 76689784), (218, 72116540), (248, 63392765), (310, 50714212), (328, 47931115), (410, 38344892), (436, 36058270), (545, 28846616), (620, 25357106), (820, 19172446), (872, 18029135), (1090, 14423308), (1240, 12678553), (1271, 12369320), (1640, 9586223), (2180, 7211654), (2542, 6184660), (2837, 5541560), (3379, 4652680), (4360, 3605827), (4469, 3517880), (5084, 3092330), (5674, 2770780), (6355, 2473864), (6758, 2326340), (8938, 1758940), (10168, 1546165), (11348, 1385390), (12710, 1236932), (13516, 1163170), (14185, 1108312), (16895, 930536), (17876, 879470), (22345, 703576), (22696, 692695), (25420, 618466), (27032, 581585), (28370, 554156), (33790, 465268), (35752, 439735), (44690, 351788), (50840, 309233), (56740, 277078), (67580, 232634), (87947, 178760), (89380, 175894), (113480, 138539), (116317, 135160)]