20175980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{313}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 46527264

約数和(自身を除く): 26351284

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 293, 313, 586, 626, 1172, 1252, 1465, 1565, 2930, 3130, 3223, 3443, 5860, 6260, 6446, 6886, 12892, 13772, 16115, 17215, 32230, 34430, 64460, 68860, 91709, 183418, 366836, 458545, 917090, 1008799, 1834180, 2017598, 4035196, 5043995, 10087990, 20175980]

約数ペア:

[(1, 20175980), (2, 10087990), (4, 5043995), (5, 4035196), (10, 2017598), (11, 1834180), (20, 1008799), (22, 917090), (44, 458545), (55, 366836), (110, 183418), (220, 91709), (293, 68860), (313, 64460), (586, 34430), (626, 32230), (1172, 17215), (1252, 16115), (1465, 13772), (1565, 12892), (2930, 6886), (3130, 6446), (3223, 6260), (3443, 5860)]