20944976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{997}}^1$

素因数の和:1119

約数の個数: 40

約数和(自身を含む): 44179464

約数和(自身を除く): 23234488

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 404, 808, 997, 1313, 1616, 1994, 2626, 3988, 5252, 7976, 10504, 12961, 15952, 21008, 25922, 51844, 100697, 103688, 201394, 207376, 402788, 805576, 1309061, 1611152, 2618122, 5236244, 10472488, 20944976]

約数ペア:

[(1, 20944976), (2, 10472488), (4, 5236244), (8, 2618122), (13, 1611152), (16, 1309061), (26, 805576), (52, 402788), (101, 207376), (104, 201394), (202, 103688), (208, 100697), (404, 51844), (808, 25922), (997, 21008), (1313, 15952), (1616, 12961), (1994, 10504), (2626, 7976), (3988, 5252)]