21408282

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1297}}^1$

素因数の和:1443

約数の個数: 48

約数和(自身を含む): 53456832

約数和(自身を除く): 32048550

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 131, 262, 393, 786, 917, 1179, 1297, 1834, 2358, 2594, 2751, 3891, 5502, 7782, 8253, 9079, 11673, 16506, 18158, 23346, 27237, 54474, 81711, 163422, 169907, 339814, 509721, 1019442, 1189349, 1529163, 2378698, 3058326, 3568047, 7136094, 10704141, 21408282]

約数ペア:

[(1, 21408282), (2, 10704141), (3, 7136094), (6, 3568047), (7, 3058326), (9, 2378698), (14, 1529163), (18, 1189349), (21, 1019442), (42, 509721), (63, 339814), (126, 169907), (131, 163422), (262, 81711), (393, 54474), (786, 27237), (917, 23346), (1179, 18158), (1297, 16506), (1834, 11673), (2358, 9079), (2594, 8253), (2751, 7782), (3891, 5502)]