20907524

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 42638400

約数和(自身を除く): 21730876

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 89, 178, 209, 281, 356, 418, 562, 836, 979, 1124, 1691, 1958, 3091, 3382, 3916, 5339, 6182, 6764, 10678, 12364, 18601, 21356, 25009, 37202, 50018, 58729, 74404, 100036, 117458, 234916, 275099, 475171, 550198, 950342, 1100396, 1900684, 5226881, 10453762, 20907524]

約数ペア:

[(1, 20907524), (2, 10453762), (4, 5226881), (11, 1900684), (19, 1100396), (22, 950342), (38, 550198), (44, 475171), (76, 275099), (89, 234916), (178, 117458), (209, 100036), (281, 74404), (356, 58729), (418, 50018), (562, 37202), (836, 25009), (979, 21356), (1124, 18601), (1691, 12364), (1958, 10678), (3091, 6764), (3382, 6182), (3916, 5339)]