664978060

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 1453712400

約数和(自身を除く): 788734340

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 149, 163, 185, 298, 326, 370, 596, 652, 740, 745, 815, 1369, 1490, 1630, 2738, 2980, 3260, 5476, 5513, 6031, 6845, 11026, 12062, 13690, 22052, 24124, 24287, 27380, 27565, 30155, 48574, 55130, 60310, 97148, 110260, 120620, 121435, 203981, 223147, 242870, 407962, 446294, 485740, 815924, 892588, 898619, 1019905, 1115735, 1797238, 2039810, 2231470, 3594476, 4079620, 4462940, 4493095, 8986190, 17972380, 33248903, 66497806, 132995612, 166244515, 332489030, 664978060]

約数ペア:

[(1, 664978060), (2, 332489030), (4, 166244515), (5, 132995612), (10, 66497806), (20, 33248903), (37, 17972380), (74, 8986190), (148, 4493095), (149, 4462940), (163, 4079620), (185, 3594476), (298, 2231470), (326, 2039810), (370, 1797238), (596, 1115735), (652, 1019905), (740, 898619), (745, 892588), (815, 815924), (1369, 485740), (1490, 446294), (1630, 407962), (2738, 242870), (2980, 223147), (3260, 203981), (5476, 121435), (5513, 120620), (6031, 110260), (6845, 97148), (11026, 60310), (12062, 55130), (13690, 48574), (22052, 30155), (24124, 27565), (24287, 27380)]