201917680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{743}}^1$

素因数の和:878

約数の個数: 80

約数和(自身を含む): 487111680

約数和(自身を除く): 285194000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 79, 80, 86, 158, 172, 215, 316, 344, 395, 430, 632, 688, 743, 790, 860, 1264, 1486, 1580, 1720, 2972, 3160, 3397, 3440, 3715, 5944, 6320, 6794, 7430, 11888, 13588, 14860, 16985, 27176, 29720, 31949, 33970, 54352, 58697, 59440, 63898, 67940, 117394, 127796, 135880, 159745, 234788, 255592, 271760, 293485, 319490, 469576, 511184, 586970, 638980, 939152, 1173940, 1277960, 2347880, 2523971, 2555920, 4695760, 5047942, 10095884, 12619855, 20191768, 25239710, 40383536, 50479420, 100958840, 201917680]

約数ペア:

[(1, 201917680), (2, 100958840), (4, 50479420), (5, 40383536), (8, 25239710), (10, 20191768), (16, 12619855), (20, 10095884), (40, 5047942), (43, 4695760), (79, 2555920), (80, 2523971), (86, 2347880), (158, 1277960), (172, 1173940), (215, 939152), (316, 638980), (344, 586970), (395, 511184), (430, 469576), (632, 319490), (688, 293485), (743, 271760), (790, 255592), (860, 234788), (1264, 159745), (1486, 135880), (1580, 127796), (1720, 117394), (2972, 67940), (3160, 63898), (3397, 59440), (3440, 58697), (3715, 54352), (5944, 33970), (6320, 31949), (6794, 29720), (7430, 27176), (11888, 16985), (13588, 14860)]