161057080

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 371628000

約数和(自身を除く): 210570920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 149, 244, 298, 305, 443, 488, 596, 610, 745, 886, 1192, 1220, 1490, 1772, 2215, 2440, 2980, 3544, 4430, 5960, 8860, 9089, 17720, 18178, 27023, 36356, 45445, 54046, 66007, 72712, 90890, 108092, 132014, 135115, 181780, 216184, 264028, 270230, 330035, 363560, 528056, 540460, 660070, 1080920, 1320140, 2640280, 4026427, 8052854, 16105708, 20132135, 32211416, 40264270, 80528540, 161057080]

約数ペア:

[(1, 161057080), (2, 80528540), (4, 40264270), (5, 32211416), (8, 20132135), (10, 16105708), (20, 8052854), (40, 4026427), (61, 2640280), (122, 1320140), (149, 1080920), (244, 660070), (298, 540460), (305, 528056), (443, 363560), (488, 330035), (596, 270230), (610, 264028), (745, 216184), (886, 181780), (1192, 135115), (1220, 132014), (1490, 108092), (1772, 90890), (2215, 72712), (2440, 66007), (2980, 54046), (3544, 45445), (4430, 36356), (5960, 27023), (8860, 18178), (9089, 17720)]