217752740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{1723}}^1$

素因数の和:1892

約数の個数: 48

約数和(自身を含む): 469203840

約数和(自身を除く): 251451100

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 890, 1420, 1723, 1780, 3446, 6319, 6892, 8615, 12638, 17230, 25276, 31595, 34460, 63190, 122333, 126380, 153347, 244666, 306694, 489332, 611665, 613388, 766735, 1223330, 1533470, 2446660, 3066940, 10887637, 21775274, 43550548, 54438185, 108876370, 217752740]

約数ペア:

[(1, 217752740), (2, 108876370), (4, 54438185), (5, 43550548), (10, 21775274), (20, 10887637), (71, 3066940), (89, 2446660), (142, 1533470), (178, 1223330), (284, 766735), (355, 613388), (356, 611665), (445, 489332), (710, 306694), (890, 244666), (1420, 153347), (1723, 126380), (1780, 122333), (3446, 63190), (6319, 34460), (6892, 31595), (8615, 25276), (12638, 17230)]