20181978190

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{115319}}^1$

素因数の和:115417

約数の個数: 64

約数和(自身を含む): 41648048640

約数和(自身を除く): 21466070450

約数列:

[1, 2, 5, 10, 11, 22, 37, 43, 55, 74, 86, 110, 185, 215, 370, 407, 430, 473, 814, 946, 1591, 2035, 2365, 3182, 4070, 4730, 7955, 15910, 17501, 35002, 87505, 115319, 175010, 230638, 576595, 1153190, 1268509, 2537018, 4266803, 4958717, 6342545, 8533606, 9917434, 12685090, 21334015, 24793585, 42668030, 46934833, 49587170, 54545887, 93869666, 109091774, 183472529, 234674165, 272729435, 366945058, 469348330, 545458870, 917362645, 1834725290, 2018197819, 4036395638, 10090989095, 20181978190]

約数ペア:

[(1, 20181978190), (2, 10090989095), (5, 4036395638), (10, 2018197819), (11, 1834725290), (22, 917362645), (37, 545458870), (43, 469348330), (55, 366945058), (74, 272729435), (86, 234674165), (110, 183472529), (185, 109091774), (215, 93869666), (370, 54545887), (407, 49587170), (430, 46934833), (473, 42668030), (814, 24793585), (946, 21334015), (1591, 12685090), (2035, 9917434), (2365, 8533606), (3182, 6342545), (4070, 4958717), (4730, 4266803), (7955, 2537018), (15910, 1268509), (17501, 1153190), (35002, 576595), (87505, 230638), (115319, 175010)]