19710908

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 41631744

約数和(自身を除く): 21920836

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 127, 161, 241, 254, 322, 482, 508, 644, 889, 964, 1687, 1778, 2921, 3374, 3556, 5543, 5842, 6748, 11086, 11684, 20447, 22172, 30607, 38801, 40894, 61214, 77602, 81788, 122428, 155204, 214249, 428498, 703961, 856996, 1407922, 2815844, 4927727, 9855454, 19710908]

約数ペア:

[(1, 19710908), (2, 9855454), (4, 4927727), (7, 2815844), (14, 1407922), (23, 856996), (28, 703961), (46, 428498), (92, 214249), (127, 155204), (161, 122428), (241, 81788), (254, 77602), (322, 61214), (482, 40894), (508, 38801), (644, 30607), (889, 22172), (964, 20447), (1687, 11684), (1778, 11086), (2921, 6748), (3374, 5842), (3556, 5543)]