21496790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2309}}^1$

素因数の和:2349

約数の個数: 48

約数和(自身を含む): 47401200

約数和(自身を除く): 25904410

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2309, 4618, 4655, 9310, 11545, 16163, 23090, 32326, 43871, 80815, 87742, 113141, 161630, 219355, 226282, 307097, 438710, 565705, 614194, 1131410, 1535485, 2149679, 3070970, 4299358, 10748395, 21496790]

約数ペア:

[(1, 21496790), (2, 10748395), (5, 4299358), (7, 3070970), (10, 2149679), (14, 1535485), (19, 1131410), (35, 614194), (38, 565705), (49, 438710), (70, 307097), (95, 226282), (98, 219355), (133, 161630), (190, 113141), (245, 87742), (266, 80815), (490, 43871), (665, 32326), (931, 23090), (1330, 16163), (1862, 11545), (2309, 9310), (4618, 4655)]