28410580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1560

約数の個数: 48

約数和(自身を含む): 65862720

約数和(自身を除く): 37452140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1451, 1780, 1958, 2902, 3916, 4895, 5804, 7255, 9790, 14510, 15961, 19580, 29020, 31922, 63844, 79805, 129139, 159610, 258278, 319220, 516556, 645695, 1291390, 1420529, 2582780, 2841058, 5682116, 7102645, 14205290, 28410580]

約数ペア:

[(1, 28410580), (2, 14205290), (4, 7102645), (5, 5682116), (10, 2841058), (11, 2582780), (20, 1420529), (22, 1291390), (44, 645695), (55, 516556), (89, 319220), (110, 258278), (178, 159610), (220, 129139), (356, 79805), (445, 63844), (890, 31922), (979, 29020), (1451, 19580), (1780, 15961), (1958, 14510), (2902, 9790), (3916, 7255), (4895, 5804)]