201236720

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^2\times {\mathrm{499}}^1$

素因数の和:654

約数の個数: 60

約数和(自身を含む): 475509000

約数和(自身を除く): 274272280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 499, 568, 710, 998, 1136, 1420, 1996, 2495, 2840, 3992, 4990, 5041, 5680, 7984, 9980, 10082, 19960, 20164, 25205, 35429, 39920, 40328, 50410, 70858, 80656, 100820, 141716, 177145, 201640, 283432, 354290, 403280, 566864, 708580, 1417160, 2515459, 2834320, 5030918, 10061836, 12577295, 20123672, 25154590, 40247344, 50309180, 100618360, 201236720]

約数ペア:

[(1, 201236720), (2, 100618360), (4, 50309180), (5, 40247344), (8, 25154590), (10, 20123672), (16, 12577295), (20, 10061836), (40, 5030918), (71, 2834320), (80, 2515459), (142, 1417160), (284, 708580), (355, 566864), (499, 403280), (568, 354290), (710, 283432), (998, 201640), (1136, 177145), (1420, 141716), (1996, 100820), (2495, 80656), (2840, 70858), (3992, 50410), (4990, 40328), (5041, 39920), (5680, 35429), (7984, 25205), (9980, 20164), (10082, 19960)]