72991980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:276

約数の個数: 144

約数和(自身を含む): 232587264

約数和(自身を除く): 159595284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 103, 124, 127, 155, 180, 186, 206, 254, 279, 309, 310, 372, 381, 412, 465, 508, 515, 558, 618, 620, 635, 762, 927, 930, 1030, 1116, 1143, 1236, 1270, 1395, 1524, 1545, 1854, 1860, 1905, 2060, 2286, 2540, 2790, 3090, 3193, 3708, 3810, 3937, 4572, 4635, 5580, 5715, 6180, 6386, 7620, 7874, 9270, 9579, 11430, 11811, 12772, 13081, 15748, 15965, 18540, 19158, 19685, 22860, 23622, 26162, 28737, 31930, 35433, 38316, 39243, 39370, 47244, 47895, 52324, 57474, 59055, 63860, 65405, 70866, 78486, 78740, 95790, 114948, 117729, 118110, 130810, 141732, 143685, 156972, 177165, 191580, 196215, 235458, 236220, 261620, 287370, 354330, 392430, 405511, 470916, 574740, 588645, 708660, 784860, 811022, 1177290, 1216533, 1622044, 2027555, 2354580, 2433066, 3649599, 4055110, 4866132, 6082665, 7299198, 8110220, 12165330, 14598396, 18247995, 24330660, 36495990, 72991980]

約数ペア:

[(1, 72991980), (2, 36495990), (3, 24330660), (4, 18247995), (5, 14598396), (6, 12165330), (9, 8110220), (10, 7299198), (12, 6082665), (15, 4866132), (18, 4055110), (20, 3649599), (30, 2433066), (31, 2354580), (36, 2027555), (45, 1622044), (60, 1216533), (62, 1177290), (90, 811022), (93, 784860), (103, 708660), (124, 588645), (127, 574740), (155, 470916), (180, 405511), (186, 392430), (206, 354330), (254, 287370), (279, 261620), (309, 236220), (310, 235458), (372, 196215), (381, 191580), (412, 177165), (465, 156972), (508, 143685), (515, 141732), (558, 130810), (618, 118110), (620, 117729), (635, 114948), (762, 95790), (927, 78740), (930, 78486), (1030, 70866), (1116, 65405), (1143, 63860), (1236, 59055), (1270, 57474), (1395, 52324), (1524, 47895), (1545, 47244), (1854, 39370), (1860, 39243), (1905, 38316), (2060, 35433), (2286, 31930), (2540, 28737), (2790, 26162), (3090, 23622), (3193, 22860), (3708, 19685), (3810, 19158), (3937, 18540), (4572, 15965), (4635, 15748), (5580, 13081), (5715, 12772), (6180, 11811), (6386, 11430), (7620, 9579), (7874, 9270)]