20385974

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{443}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 37082880

約数和(自身を除く): 16696906

約数列:

[1, 2, 7, 14, 19, 38, 133, 173, 266, 346, 443, 886, 1211, 2422, 3101, 3287, 6202, 6574, 8417, 16834, 23009, 46018, 58919, 76639, 117838, 153278, 536473, 1072946, 1456141, 2912282, 10192987, 20385974]

約数ペア:

[(1, 20385974), (2, 10192987), (7, 2912282), (14, 1456141), (19, 1072946), (38, 536473), (133, 153278), (173, 117838), (266, 76639), (346, 58919), (443, 46018), (886, 23009), (1211, 16834), (2422, 8417), (3101, 6574), (3287, 6202)]