28017220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 78599808

約数和(自身を除く): 50582588

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 49, 55, 70, 77, 92, 98, 110, 113, 115, 140, 154, 161, 196, 220, 226, 230, 245, 253, 308, 322, 385, 452, 460, 490, 506, 539, 565, 644, 770, 791, 805, 980, 1012, 1078, 1127, 1130, 1243, 1265, 1540, 1582, 1610, 1771, 2156, 2254, 2260, 2486, 2530, 2599, 2695, 3164, 3220, 3542, 3955, 4508, 4972, 5060, 5198, 5390, 5537, 5635, 6215, 7084, 7910, 8701, 8855, 10396, 10780, 11074, 11270, 12397, 12430, 12995, 15820, 17402, 17710, 18193, 22148, 22540, 24794, 24860, 25990, 27685, 28589, 34804, 35420, 36386, 43505, 49588, 51980, 55370, 57178, 60907, 61985, 72772, 87010, 90965, 110740, 114356, 121814, 123970, 127351, 142945, 174020, 181930, 200123, 243628, 247940, 254702, 285890, 304535, 363860, 400246, 509404, 571780, 609070, 636755, 800492, 1000615, 1218140, 1273510, 1400861, 2001230, 2547020, 2801722, 4002460, 5603444, 7004305, 14008610, 28017220]

約数ペア:

[(1, 28017220), (2, 14008610), (4, 7004305), (5, 5603444), (7, 4002460), (10, 2801722), (11, 2547020), (14, 2001230), (20, 1400861), (22, 1273510), (23, 1218140), (28, 1000615), (35, 800492), (44, 636755), (46, 609070), (49, 571780), (55, 509404), (70, 400246), (77, 363860), (92, 304535), (98, 285890), (110, 254702), (113, 247940), (115, 243628), (140, 200123), (154, 181930), (161, 174020), (196, 142945), (220, 127351), (226, 123970), (230, 121814), (245, 114356), (253, 110740), (308, 90965), (322, 87010), (385, 72772), (452, 61985), (460, 60907), (490, 57178), (506, 55370), (539, 51980), (565, 49588), (644, 43505), (770, 36386), (791, 35420), (805, 34804), (980, 28589), (1012, 27685), (1078, 25990), (1127, 24860), (1130, 24794), (1243, 22540), (1265, 22148), (1540, 18193), (1582, 17710), (1610, 17402), (1771, 15820), (2156, 12995), (2254, 12430), (2260, 12397), (2486, 11270), (2530, 11074), (2599, 10780), (2695, 10396), (3164, 8855), (3220, 8701), (3542, 7910), (3955, 7084), (4508, 6215), (4972, 5635), (5060, 5537), (5198, 5390)]