20820580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:349

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 32522780

約数列:

[1, 2, 4, 5, 10, 11, 17, 19, 20, 22, 34, 38, 44, 55, 68, 76, 85, 95, 110, 170, 187, 190, 209, 220, 293, 323, 340, 374, 380, 418, 586, 646, 748, 836, 935, 1045, 1172, 1292, 1465, 1615, 1870, 2090, 2930, 3223, 3230, 3553, 3740, 4180, 4981, 5567, 5860, 6446, 6460, 7106, 9962, 11134, 12892, 14212, 16115, 17765, 19924, 22268, 24905, 27835, 32230, 35530, 49810, 54791, 55670, 61237, 64460, 71060, 94639, 99620, 109582, 111340, 122474, 189278, 219164, 244948, 273955, 306185, 378556, 473195, 547910, 612370, 946390, 1041029, 1095820, 1224740, 1892780, 2082058, 4164116, 5205145, 10410290, 20820580]

約数ペア:

[(1, 20820580), (2, 10410290), (4, 5205145), (5, 4164116), (10, 2082058), (11, 1892780), (17, 1224740), (19, 1095820), (20, 1041029), (22, 946390), (34, 612370), (38, 547910), (44, 473195), (55, 378556), (68, 306185), (76, 273955), (85, 244948), (95, 219164), (110, 189278), (170, 122474), (187, 111340), (190, 109582), (209, 99620), (220, 94639), (293, 71060), (323, 64460), (340, 61237), (374, 55670), (380, 54791), (418, 49810), (586, 35530), (646, 32230), (748, 27835), (836, 24905), (935, 22268), (1045, 19924), (1172, 17765), (1292, 16115), (1465, 14212), (1615, 12892), (1870, 11134), (2090, 9962), (2930, 7106), (3223, 6460), (3230, 6446), (3553, 5860), (3740, 5567), (4180, 4981)]