21342258

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 33400782

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 131, 189, 262, 378, 393, 431, 786, 862, 917, 1179, 1293, 1834, 2358, 2586, 2751, 3017, 3537, 3879, 5502, 6034, 7074, 7758, 8253, 9051, 11637, 16506, 18102, 23274, 24759, 27153, 49518, 54306, 56461, 81459, 112922, 162918, 169383, 338766, 395227, 508149, 790454, 1016298, 1185681, 1524447, 2371362, 3048894, 3557043, 7114086, 10671129, 21342258]

約数ペア:

[(1, 21342258), (2, 10671129), (3, 7114086), (6, 3557043), (7, 3048894), (9, 2371362), (14, 1524447), (18, 1185681), (21, 1016298), (27, 790454), (42, 508149), (54, 395227), (63, 338766), (126, 169383), (131, 162918), (189, 112922), (262, 81459), (378, 56461), (393, 54306), (431, 49518), (786, 27153), (862, 24759), (917, 23274), (1179, 18102), (1293, 16506), (1834, 11637), (2358, 9051), (2586, 8253), (2751, 7758), (3017, 7074), (3537, 6034), (3879, 5502)]