39880120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{20347}}^1$

素因数の和:20372

約数の個数: 48

約数和(自身を含む): 104385240

約数和(自身を除く): 64505120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 20347, 40694, 81388, 101735, 142429, 162776, 203470, 284858, 406940, 569716, 712145, 813880, 997003, 1139432, 1424290, 1994006, 2848580, 3988012, 4985015, 5697160, 7976024, 9970030, 19940060, 39880120]

約数ペア:

[(1, 39880120), (2, 19940060), (4, 9970030), (5, 7976024), (7, 5697160), (8, 4985015), (10, 3988012), (14, 2848580), (20, 1994006), (28, 1424290), (35, 1139432), (40, 997003), (49, 813880), (56, 712145), (70, 569716), (98, 406940), (140, 284858), (196, 203470), (245, 162776), (280, 142429), (392, 101735), (490, 81388), (980, 40694), (1960, 20347)]