84138740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{439}}^1$

素因数の和:529

約数の個数: 72

約数和(自身を含む): 208010880

約数和(自身を除く): 123872140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 439, 518, 740, 878, 1036, 1295, 1369, 1756, 2195, 2590, 2738, 3073, 4390, 5180, 5476, 6146, 6845, 8780, 9583, 12292, 13690, 15365, 16243, 19166, 27380, 30730, 32486, 38332, 47915, 61460, 64972, 81215, 95830, 113701, 162430, 191660, 227402, 324860, 454804, 568505, 600991, 1137010, 1201982, 2274020, 2403964, 3004955, 4206937, 6009910, 8413874, 12019820, 16827748, 21034685, 42069370, 84138740]

約数ペア:

[(1, 84138740), (2, 42069370), (4, 21034685), (5, 16827748), (7, 12019820), (10, 8413874), (14, 6009910), (20, 4206937), (28, 3004955), (35, 2403964), (37, 2274020), (70, 1201982), (74, 1137010), (140, 600991), (148, 568505), (185, 454804), (259, 324860), (370, 227402), (439, 191660), (518, 162430), (740, 113701), (878, 95830), (1036, 81215), (1295, 64972), (1369, 61460), (1756, 47915), (2195, 38332), (2590, 32486), (2738, 30730), (3073, 27380), (4390, 19166), (5180, 16243), (5476, 15365), (6146, 13690), (6845, 12292), (8780, 9583)]