20062720

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:501

約数の個数: 80

約数和(自身を含む): 51043608

約数和(自身を除く): 30980888

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 461, 512, 544, 640, 680, 922, 1088, 1280, 1360, 1844, 2176, 2305, 2560, 2720, 3688, 4352, 4610, 5440, 7376, 7837, 8704, 9220, 10880, 14752, 15674, 18440, 21760, 29504, 31348, 36880, 39185, 43520, 59008, 62696, 73760, 78370, 118016, 125392, 147520, 156740, 236032, 250784, 295040, 313480, 501568, 590080, 626960, 1003136, 1180160, 1253920, 2006272, 2507840, 4012544, 5015680, 10031360, 20062720]

約数ペア:

[(1, 20062720), (2, 10031360), (4, 5015680), (5, 4012544), (8, 2507840), (10, 2006272), (16, 1253920), (17, 1180160), (20, 1003136), (32, 626960), (34, 590080), (40, 501568), (64, 313480), (68, 295040), (80, 250784), (85, 236032), (128, 156740), (136, 147520), (160, 125392), (170, 118016), (256, 78370), (272, 73760), (320, 62696), (340, 59008), (461, 43520), (512, 39185), (544, 36880), (640, 31348), (680, 29504), (922, 21760), (1088, 18440), (1280, 15674), (1360, 14752), (1844, 10880), (2176, 9220), (2305, 8704), (2560, 7837), (2720, 7376), (3688, 5440), (4352, 4610)]