19397920

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2957}}^1$

素因数の和:3013

約数の個数: 48

約数和(自身を含む): 46961208

約数和(自身を除く): 27563288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 2957, 3280, 5914, 6560, 11828, 14785, 23656, 29570, 47312, 59140, 94624, 118280, 121237, 236560, 242474, 473120, 484948, 606185, 969896, 1212370, 1939792, 2424740, 3879584, 4849480, 9698960, 19397920]

約数ペア:

[(1, 19397920), (2, 9698960), (4, 4849480), (5, 3879584), (8, 2424740), (10, 1939792), (16, 1212370), (20, 969896), (32, 606185), (40, 484948), (41, 473120), (80, 242474), (82, 236560), (160, 121237), (164, 118280), (205, 94624), (328, 59140), (410, 47312), (656, 29570), (820, 23656), (1312, 14785), (1640, 11828), (2957, 6560), (3280, 5914)]