20319740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7639}}^1$

素因数の和:7674

約数の個数: 48

約数和(自身を含む): 51340800

約数和(自身を除く): 31021060

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7639, 15278, 30556, 38195, 53473, 76390, 106946, 145141, 152780, 213892, 267365, 290282, 534730, 580564, 725705, 1015987, 1069460, 1451410, 2031974, 2902820, 4063948, 5079935, 10159870, 20319740]

約数ペア:

[(1, 20319740), (2, 10159870), (4, 5079935), (5, 4063948), (7, 2902820), (10, 2031974), (14, 1451410), (19, 1069460), (20, 1015987), (28, 725705), (35, 580564), (38, 534730), (70, 290282), (76, 267365), (95, 213892), (133, 152780), (140, 145141), (190, 106946), (266, 76390), (380, 53473), (532, 38195), (665, 30556), (1330, 15278), (2660, 7639)]