199971500

素因数分解:

$2^2\times 5^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:264

約数の個数: 96

約数和(自身を含む): 456648192

約数和(自身を除く): 256676692

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 71, 86, 100, 125, 131, 142, 172, 215, 250, 262, 284, 355, 430, 500, 524, 655, 710, 860, 1075, 1310, 1420, 1775, 2150, 2620, 3053, 3275, 3550, 4300, 5375, 5633, 6106, 6550, 7100, 8875, 9301, 10750, 11266, 12212, 13100, 15265, 16375, 17750, 18602, 21500, 22532, 28165, 30530, 32750, 35500, 37204, 46505, 56330, 61060, 65500, 76325, 93010, 112660, 140825, 152650, 186020, 232525, 281650, 305300, 381625, 399943, 465050, 563300, 704125, 763250, 799886, 930100, 1162625, 1408250, 1526500, 1599772, 1999715, 2325250, 2816500, 3999430, 4650500, 7998860, 9998575, 19997150, 39994300, 49992875, 99985750, 199971500]

約数ペア:

[(1, 199971500), (2, 99985750), (4, 49992875), (5, 39994300), (10, 19997150), (20, 9998575), (25, 7998860), (43, 4650500), (50, 3999430), (71, 2816500), (86, 2325250), (100, 1999715), (125, 1599772), (131, 1526500), (142, 1408250), (172, 1162625), (215, 930100), (250, 799886), (262, 763250), (284, 704125), (355, 563300), (430, 465050), (500, 399943), (524, 381625), (655, 305300), (710, 281650), (860, 232525), (1075, 186020), (1310, 152650), (1420, 140825), (1775, 112660), (2150, 93010), (2620, 76325), (3053, 65500), (3275, 61060), (3550, 56330), (4300, 46505), (5375, 37204), (5633, 35500), (6106, 32750), (6550, 30530), (7100, 28165), (8875, 22532), (9301, 21500), (10750, 18602), (11266, 17750), (12212, 16375), (13100, 15265)]