19940720

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{4703}}^1$

素因数の和:4769

約数の個数: 40

約数和(自身を含む): 47246976

約数和(自身を除く): 27306256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 4703, 9406, 18812, 23515, 37624, 47030, 75248, 94060, 188120, 249259, 376240, 498518, 997036, 1246295, 1994072, 2492590, 3988144, 4985180, 9970360, 19940720]

約数ペア:

[(1, 19940720), (2, 9970360), (4, 4985180), (5, 3988144), (8, 2492590), (10, 1994072), (16, 1246295), (20, 997036), (40, 498518), (53, 376240), (80, 249259), (106, 188120), (212, 94060), (265, 75248), (424, 47030), (530, 37624), (848, 23515), (1060, 18812), (2120, 9406), (4240, 4703)]