20870276

素因数分解:

$2^2\times 7^2\times {\mathrm{233}}^1\times {\mathrm{457}}^1$

素因数の和:708

約数の個数: 36

約数和(自身を含む): 42761628

約数和(自身を除く): 21891352

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 233, 457, 466, 914, 932, 1631, 1828, 3199, 3262, 6398, 6524, 11417, 12796, 22393, 22834, 44786, 45668, 89572, 106481, 212962, 425924, 745367, 1490734, 2981468, 5217569, 10435138, 20870276]

約数ペア:

[(1, 20870276), (2, 10435138), (4, 5217569), (7, 2981468), (14, 1490734), (28, 745367), (49, 425924), (98, 212962), (196, 106481), (233, 89572), (457, 45668), (466, 44786), (914, 22834), (932, 22393), (1631, 12796), (1828, 11417), (3199, 6524), (3262, 6398)]