80661650

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 159096960

約数和(自身を除く): 78435310

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 190, 197, 394, 431, 475, 862, 950, 985, 1970, 2155, 3743, 4310, 4925, 7486, 8189, 9850, 10775, 16378, 18715, 21550, 37430, 40945, 81890, 84907, 93575, 169814, 187150, 204725, 409450, 424535, 849070, 1613233, 2122675, 3226466, 4245350, 8066165, 16132330, 40330825, 80661650]

約数ペア:

[(1, 80661650), (2, 40330825), (5, 16132330), (10, 8066165), (19, 4245350), (25, 3226466), (38, 2122675), (50, 1613233), (95, 849070), (190, 424535), (197, 409450), (394, 204725), (431, 187150), (475, 169814), (862, 93575), (950, 84907), (985, 81890), (1970, 40945), (2155, 37430), (3743, 21550), (4310, 18715), (4925, 16378), (7486, 10775), (8189, 9850)]