20712790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1031}}^1$

素因数の和:1093

約数の個数: 48

約数和(自身を含む): 44470944

約数和(自身を除く): 23758154

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 49, 70, 82, 98, 205, 245, 287, 410, 490, 574, 1031, 1435, 2009, 2062, 2870, 4018, 5155, 7217, 10045, 10310, 14434, 20090, 36085, 42271, 50519, 72170, 84542, 101038, 211355, 252595, 295897, 422710, 505190, 591794, 1479485, 2071279, 2958970, 4142558, 10356395, 20712790]

約数ペア:

[(1, 20712790), (2, 10356395), (5, 4142558), (7, 2958970), (10, 2071279), (14, 1479485), (35, 591794), (41, 505190), (49, 422710), (70, 295897), (82, 252595), (98, 211355), (205, 101038), (245, 84542), (287, 72170), (410, 50519), (490, 42271), (574, 36085), (1031, 20090), (1435, 14434), (2009, 10310), (2062, 10045), (2870, 7217), (4018, 5155)]