20165680

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3037}}^1$

素因数の和:3133

約数の個数: 40

約数和(自身を含む): 47465712

約数和(自身を除く): 27300032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3037, 3320, 6074, 6640, 12148, 15185, 24296, 30370, 48592, 60740, 121480, 242960, 252071, 504142, 1008284, 1260355, 2016568, 2520710, 4033136, 5041420, 10082840, 20165680]

約数ペア:

[(1, 20165680), (2, 10082840), (4, 5041420), (5, 4033136), (8, 2520710), (10, 2016568), (16, 1260355), (20, 1008284), (40, 504142), (80, 252071), (83, 242960), (166, 121480), (332, 60740), (415, 48592), (664, 30370), (830, 24296), (1328, 15185), (1660, 12148), (3037, 6640), (3320, 6074)]