21388276

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{877}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 46807936

約数和(自身を除く): 25419660

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 67, 91, 134, 182, 268, 364, 469, 871, 877, 938, 1742, 1754, 1876, 3484, 3508, 6097, 6139, 11401, 12194, 12278, 22802, 24388, 24556, 45604, 58759, 79807, 117518, 159614, 235036, 319228, 411313, 763867, 822626, 1527734, 1645252, 3055468, 5347069, 10694138, 21388276]

約数ペア:

[(1, 21388276), (2, 10694138), (4, 5347069), (7, 3055468), (13, 1645252), (14, 1527734), (26, 822626), (28, 763867), (52, 411313), (67, 319228), (91, 235036), (134, 159614), (182, 117518), (268, 79807), (364, 58759), (469, 45604), (871, 24556), (877, 24388), (938, 22802), (1742, 12278), (1754, 12194), (1876, 11401), (3484, 6139), (3508, 6097)]