21420532

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 44932608

約数和(自身を除く): 23512076

約数列:

[1, 2, 4, 7, 14, 28, 41, 47, 82, 94, 164, 188, 287, 329, 397, 574, 658, 794, 1148, 1316, 1588, 1927, 2779, 3854, 5558, 7708, 11116, 13489, 16277, 18659, 26978, 32554, 37318, 53956, 65108, 74636, 113939, 130613, 227878, 261226, 455756, 522452, 765019, 1530038, 3060076, 5355133, 10710266, 21420532]

約数ペア:

[(1, 21420532), (2, 10710266), (4, 5355133), (7, 3060076), (14, 1530038), (28, 765019), (41, 522452), (47, 455756), (82, 261226), (94, 227878), (164, 130613), (188, 113939), (287, 74636), (329, 65108), (397, 53956), (574, 37318), (658, 32554), (794, 26978), (1148, 18659), (1316, 16277), (1588, 13489), (1927, 11116), (2779, 7708), (3854, 5558)]