20215820415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1063}}^1\times {\mathrm{2551}}^1$

素因数の和:3700

約数の個数: 64

約数和(自身を含む): 37536694272

約数和(自身を除く): 17320873857

約数列:

[1, 3, 5, 7, 15, 21, 35, 71, 105, 213, 355, 497, 1063, 1065, 1491, 2485, 2551, 3189, 5315, 7441, 7455, 7653, 12755, 15945, 17857, 22323, 37205, 38265, 53571, 75473, 89285, 111615, 181121, 226419, 267855, 377365, 528311, 543363, 905605, 1132095, 1267847, 1584933, 2641555, 2711713, 2716815, 3803541, 6339235, 7924665, 8135139, 13558565, 18981991, 19017705, 40675695, 56945973, 94909955, 192531623, 284729865, 577594869, 962658115, 1347721361, 2887974345, 4043164083, 6738606805, 20215820415]

約数ペア:

[(1, 20215820415), (3, 6738606805), (5, 4043164083), (7, 2887974345), (15, 1347721361), (21, 962658115), (35, 577594869), (71, 284729865), (105, 192531623), (213, 94909955), (355, 56945973), (497, 40675695), (1063, 19017705), (1065, 18981991), (1491, 13558565), (2485, 8135139), (2551, 7924665), (3189, 6339235), (5315, 3803541), (7441, 2716815), (7455, 2711713), (7653, 2641555), (12755, 1584933), (15945, 1267847), (17857, 1132095), (22323, 905605), (37205, 543363), (38265, 528311), (53571, 377365), (75473, 267855), (89285, 226419), (111615, 181121)]