21730676

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 43908480

約数和(自身を除く): 22177804

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 109, 197, 218, 253, 394, 436, 506, 788, 1012, 1199, 2167, 2398, 2507, 4334, 4531, 4796, 5014, 8668, 9062, 10028, 18124, 21473, 27577, 42946, 49841, 55154, 85892, 99682, 110308, 199364, 236203, 472406, 493879, 944812, 987758, 1975516, 5432669, 10865338, 21730676]

約数ペア:

[(1, 21730676), (2, 10865338), (4, 5432669), (11, 1975516), (22, 987758), (23, 944812), (44, 493879), (46, 472406), (92, 236203), (109, 199364), (197, 110308), (218, 99682), (253, 85892), (394, 55154), (436, 49841), (506, 42946), (788, 27577), (1012, 21473), (1199, 18124), (2167, 10028), (2398, 9062), (2507, 8668), (4334, 5014), (4531, 4796)]