21419216

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:388

約数の個数: 80

約数和(自身を含む): 52329984

約数和(自身を除く): 30910768

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 47, 52, 56, 91, 94, 104, 112, 182, 188, 208, 313, 329, 364, 376, 611, 626, 658, 728, 752, 1222, 1252, 1316, 1456, 2191, 2444, 2504, 2632, 4069, 4277, 4382, 4888, 5008, 5264, 8138, 8554, 8764, 9776, 14711, 16276, 17108, 17528, 28483, 29422, 32552, 34216, 35056, 56966, 58844, 65104, 68432, 102977, 113932, 117688, 191243, 205954, 227864, 235376, 382486, 411908, 455728, 764972, 823816, 1338701, 1529944, 1647632, 2677402, 3059888, 5354804, 10709608, 21419216]

約数ペア:

[(1, 21419216), (2, 10709608), (4, 5354804), (7, 3059888), (8, 2677402), (13, 1647632), (14, 1529944), (16, 1338701), (26, 823816), (28, 764972), (47, 455728), (52, 411908), (56, 382486), (91, 235376), (94, 227864), (104, 205954), (112, 191243), (182, 117688), (188, 113932), (208, 102977), (313, 68432), (329, 65104), (364, 58844), (376, 56966), (611, 35056), (626, 34216), (658, 32552), (728, 29422), (752, 28483), (1222, 17528), (1252, 17108), (1316, 16276), (1456, 14711), (2191, 9776), (2444, 8764), (2504, 8554), (2632, 8138), (4069, 5264), (4277, 5008), (4382, 4888)]