20921236

素因数分解:

$2^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{617}}^1$

素因数の和:808

約数の個数: 36

約数和(自身を含む): 42905268

約数和(自身を除く): 21984032

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 173, 196, 346, 617, 692, 1211, 1234, 2422, 2468, 4319, 4844, 8477, 8638, 16954, 17276, 30233, 33908, 60466, 106741, 120932, 213482, 426964, 747187, 1494374, 2988748, 5230309, 10460618, 20921236]

約数ペア:

[(1, 20921236), (2, 10460618), (4, 5230309), (7, 2988748), (14, 1494374), (28, 747187), (49, 426964), (98, 213482), (173, 120932), (196, 106741), (346, 60466), (617, 33908), (692, 30233), (1211, 17276), (1234, 16954), (2422, 8638), (2468, 8477), (4319, 4844)]