20312425

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 31248000

約数和(自身を除く): 10935575

約数列:

[1, 5, 7, 19, 25, 35, 41, 95, 133, 149, 175, 205, 287, 475, 665, 745, 779, 1025, 1043, 1435, 2831, 3325, 3725, 3895, 5215, 5453, 6109, 7175, 14155, 19475, 19817, 26075, 27265, 30545, 42763, 70775, 99085, 116071, 136325, 152725, 213815, 495425, 580355, 812497, 1069075, 2901775, 4062485, 20312425]

約数ペア:

[(1, 20312425), (5, 4062485), (7, 2901775), (19, 1069075), (25, 812497), (35, 580355), (41, 495425), (95, 213815), (133, 152725), (149, 136325), (175, 116071), (205, 99085), (287, 70775), (475, 42763), (665, 30545), (745, 27265), (779, 26075), (1025, 19817), (1043, 19475), (1435, 14155), (2831, 7175), (3325, 6109), (3725, 5453), (3895, 5215)]