20624944

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{397}}^1$

素因数の和:613

約数の個数: 40

約数和(自身を含む): 42640128

約数和(自身を除く): 22015184

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 191, 272, 382, 397, 764, 794, 1528, 1588, 3056, 3176, 3247, 6352, 6494, 6749, 12988, 13498, 25976, 26996, 51952, 53992, 75827, 107984, 151654, 303308, 606616, 1213232, 1289059, 2578118, 5156236, 10312472, 20624944]

約数ペア:

[(1, 20624944), (2, 10312472), (4, 5156236), (8, 2578118), (16, 1289059), (17, 1213232), (34, 606616), (68, 303308), (136, 151654), (191, 107984), (272, 75827), (382, 53992), (397, 51952), (764, 26996), (794, 25976), (1528, 13498), (1588, 12988), (3056, 6749), (3176, 6494), (3247, 6352)]