19954760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10181}}^1$

素因数の和:10206

約数の個数: 48

約数和(自身を含む): 52233660

約数和(自身を除く): 32278900

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10181, 20362, 40724, 50905, 71267, 81448, 101810, 142534, 203620, 285068, 356335, 407240, 498869, 570136, 712670, 997738, 1425340, 1995476, 2494345, 2850680, 3990952, 4988690, 9977380, 19954760]

約数ペア:

[(1, 19954760), (2, 9977380), (4, 4988690), (5, 3990952), (7, 2850680), (8, 2494345), (10, 1995476), (14, 1425340), (20, 997738), (28, 712670), (35, 570136), (40, 498869), (49, 407240), (56, 356335), (70, 285068), (98, 203620), (140, 142534), (196, 101810), (245, 81448), (280, 71267), (392, 50905), (490, 40724), (980, 20362), (1960, 10181)]