19778704

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1031}}^1$

素因数の和:1159

約数の個数: 40

約数和(自身を含む): 42229440

約数和(自身を除く): 22450736

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 109, 176, 218, 436, 872, 1031, 1199, 1744, 2062, 2398, 4124, 4796, 8248, 9592, 11341, 16496, 19184, 22682, 45364, 90728, 112379, 181456, 224758, 449516, 899032, 1236169, 1798064, 2472338, 4944676, 9889352, 19778704]

約数ペア:

[(1, 19778704), (2, 9889352), (4, 4944676), (8, 2472338), (11, 1798064), (16, 1236169), (22, 899032), (44, 449516), (88, 224758), (109, 181456), (176, 112379), (218, 90728), (436, 45364), (872, 22682), (1031, 19184), (1199, 16496), (1744, 11341), (2062, 9592), (2398, 8248), (4124, 4796)]