66610780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{769}}^1$

素因数の和:910

約数の個数: 48

約数和(自身を含む): 144365760

約数和(自身を除く): 77754980

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 244, 284, 305, 355, 610, 710, 769, 1220, 1420, 1538, 3076, 3845, 4331, 7690, 8662, 15380, 17324, 21655, 43310, 46909, 54599, 86620, 93818, 109198, 187636, 218396, 234545, 272995, 469090, 545990, 938180, 1091980, 3330539, 6661078, 13322156, 16652695, 33305390, 66610780]

約数ペア:

[(1, 66610780), (2, 33305390), (4, 16652695), (5, 13322156), (10, 6661078), (20, 3330539), (61, 1091980), (71, 938180), (122, 545990), (142, 469090), (244, 272995), (284, 234545), (305, 218396), (355, 187636), (610, 109198), (710, 93818), (769, 86620), (1220, 54599), (1420, 46909), (1538, 43310), (3076, 21655), (3845, 17324), (4331, 15380), (7690, 8662)]