28557340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 70912800

約数和(自身を除く): 42355460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 149, 185, 259, 298, 370, 518, 596, 740, 745, 1036, 1043, 1295, 1369, 1490, 2086, 2590, 2738, 2980, 4172, 5180, 5215, 5476, 5513, 6845, 9583, 10430, 11026, 13690, 19166, 20860, 22052, 27380, 27565, 38332, 38591, 47915, 55130, 77182, 95830, 110260, 154364, 191660, 192955, 203981, 385910, 407962, 771820, 815924, 1019905, 1427867, 2039810, 2855734, 4079620, 5711468, 7139335, 14278670, 28557340]

約数ペア:

[(1, 28557340), (2, 14278670), (4, 7139335), (5, 5711468), (7, 4079620), (10, 2855734), (14, 2039810), (20, 1427867), (28, 1019905), (35, 815924), (37, 771820), (70, 407962), (74, 385910), (140, 203981), (148, 192955), (149, 191660), (185, 154364), (259, 110260), (298, 95830), (370, 77182), (518, 55130), (596, 47915), (740, 38591), (745, 38332), (1036, 27565), (1043, 27380), (1295, 22052), (1369, 20860), (1490, 19166), (2086, 13690), (2590, 11026), (2738, 10430), (2980, 9583), (4172, 6845), (5180, 5513), (5215, 5476)]