20687702

素因数分解:

$2^1\times 7^3\times {\mathrm{53}}^1\times {\mathrm{569}}^1$

素因数の和:645

約数の個数: 32

約数和(自身を含む): 36936000

約数和(自身を除く): 16248298

約数列:

[1, 2, 7, 14, 49, 53, 98, 106, 343, 371, 569, 686, 742, 1138, 2597, 3983, 5194, 7966, 18179, 27881, 30157, 36358, 55762, 60314, 195167, 211099, 390334, 422198, 1477693, 2955386, 10343851, 20687702]

約数ペア:

[(1, 20687702), (2, 10343851), (7, 2955386), (14, 1477693), (49, 422198), (53, 390334), (98, 211099), (106, 195167), (343, 60314), (371, 55762), (569, 36358), (686, 30157), (742, 27881), (1138, 18179), (2597, 7966), (3983, 5194)]