28141740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{233}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 95056416

約数和(自身を除く): 66914676

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 61, 66, 90, 99, 110, 122, 132, 165, 180, 183, 198, 220, 233, 244, 305, 330, 366, 396, 466, 495, 549, 610, 660, 671, 699, 732, 915, 932, 990, 1098, 1165, 1220, 1342, 1398, 1830, 1980, 2013, 2097, 2196, 2330, 2563, 2684, 2745, 2796, 3355, 3495, 3660, 4026, 4194, 4660, 5126, 5490, 6039, 6710, 6990, 7689, 8052, 8388, 10065, 10252, 10485, 10980, 12078, 12815, 13420, 13980, 14213, 15378, 20130, 20970, 23067, 24156, 25630, 28426, 30195, 30756, 38445, 40260, 41940, 42639, 46134, 51260, 56852, 60390, 71065, 76890, 85278, 92268, 115335, 120780, 127917, 142130, 153780, 156343, 170556, 213195, 230670, 255834, 284260, 312686, 426390, 461340, 469029, 511668, 625372, 639585, 781715, 852780, 938058, 1279170, 1407087, 1563430, 1876116, 2345145, 2558340, 2814174, 3126860, 4690290, 5628348, 7035435, 9380580, 14070870, 28141740]

約数ペア:

[(1, 28141740), (2, 14070870), (3, 9380580), (4, 7035435), (5, 5628348), (6, 4690290), (9, 3126860), (10, 2814174), (11, 2558340), (12, 2345145), (15, 1876116), (18, 1563430), (20, 1407087), (22, 1279170), (30, 938058), (33, 852780), (36, 781715), (44, 639585), (45, 625372), (55, 511668), (60, 469029), (61, 461340), (66, 426390), (90, 312686), (99, 284260), (110, 255834), (122, 230670), (132, 213195), (165, 170556), (180, 156343), (183, 153780), (198, 142130), (220, 127917), (233, 120780), (244, 115335), (305, 92268), (330, 85278), (366, 76890), (396, 71065), (466, 60390), (495, 56852), (549, 51260), (610, 46134), (660, 42639), (671, 41940), (699, 40260), (732, 38445), (915, 30756), (932, 30195), (990, 28426), (1098, 25630), (1165, 24156), (1220, 23067), (1342, 20970), (1398, 20130), (1830, 15378), (1980, 14213), (2013, 13980), (2097, 13420), (2196, 12815), (2330, 12078), (2563, 10980), (2684, 10485), (2745, 10252), (2796, 10065), (3355, 8388), (3495, 8052), (3660, 7689), (4026, 6990), (4194, 6710), (4660, 6039), (5126, 5490)]