331298780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{1289}}^1$

素因数の和:1550

約数の個数: 48

約数和(自身を含む): 709974720

約数和(自身を除く): 378675940

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 181, 284, 355, 362, 710, 724, 905, 1289, 1420, 1810, 2578, 3620, 5156, 6445, 12851, 12890, 25702, 25780, 51404, 64255, 91519, 128510, 183038, 233309, 257020, 366076, 457595, 466618, 915190, 933236, 1166545, 1830380, 2333090, 4666180, 16564939, 33129878, 66259756, 82824695, 165649390, 331298780]

約数ペア:

[(1, 331298780), (2, 165649390), (4, 82824695), (5, 66259756), (10, 33129878), (20, 16564939), (71, 4666180), (142, 2333090), (181, 1830380), (284, 1166545), (355, 933236), (362, 915190), (710, 466618), (724, 457595), (905, 366076), (1289, 257020), (1420, 233309), (1810, 183038), (2578, 128510), (3620, 91519), (5156, 64255), (6445, 51404), (12851, 25780), (12890, 25702)]