20608910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{307}}^1$

素因数の和:465

約数の個数: 48

約数和(自身を含む): 43609104

約数和(自身を除く): 23000194

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 137, 245, 274, 307, 490, 614, 685, 959, 1370, 1535, 1918, 2149, 3070, 4298, 4795, 6713, 9590, 10745, 13426, 15043, 21490, 30086, 33565, 42059, 67130, 75215, 84118, 150430, 210295, 294413, 420590, 588826, 1472065, 2060891, 2944130, 4121782, 10304455, 20608910]

約数ペア:

[(1, 20608910), (2, 10304455), (5, 4121782), (7, 2944130), (10, 2060891), (14, 1472065), (35, 588826), (49, 420590), (70, 294413), (98, 210295), (137, 150430), (245, 84118), (274, 75215), (307, 67130), (490, 42059), (614, 33565), (685, 30086), (959, 21490), (1370, 15043), (1535, 13426), (1918, 10745), (2149, 9590), (3070, 6713), (4298, 4795)]