21031038

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2011}}^1$

素因数の和:2109

約数の個数: 48

約数和(自身を含む): 52730496

約数和(自身を除く): 31699458

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 83, 126, 166, 249, 498, 581, 747, 1162, 1494, 1743, 2011, 3486, 4022, 5229, 6033, 10458, 12066, 14077, 18099, 28154, 36198, 42231, 84462, 126693, 166913, 253386, 333826, 500739, 1001478, 1168391, 1502217, 2336782, 3004434, 3505173, 7010346, 10515519, 21031038]

約数ペア:

[(1, 21031038), (2, 10515519), (3, 7010346), (6, 3505173), (7, 3004434), (9, 2336782), (14, 1502217), (18, 1168391), (21, 1001478), (42, 500739), (63, 333826), (83, 253386), (126, 166913), (166, 126693), (249, 84462), (498, 42231), (581, 36198), (747, 28154), (1162, 18099), (1494, 14077), (1743, 12066), (2011, 10458), (3486, 6033), (4022, 5229)]