21446288

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 60

約数和(自身を含む): 45354240

約数和(自身を除く): 23907952

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 79, 94, 152, 158, 188, 304, 316, 361, 376, 632, 722, 752, 893, 1264, 1444, 1501, 1786, 2888, 3002, 3572, 3713, 5776, 6004, 7144, 7426, 12008, 14288, 14852, 16967, 24016, 28519, 29704, 33934, 57038, 59408, 67868, 70547, 114076, 135736, 141094, 228152, 271472, 282188, 456304, 564376, 1128752, 1340393, 2680786, 5361572, 10723144, 21446288]

約数ペア:

[(1, 21446288), (2, 10723144), (4, 5361572), (8, 2680786), (16, 1340393), (19, 1128752), (38, 564376), (47, 456304), (76, 282188), (79, 271472), (94, 228152), (152, 141094), (158, 135736), (188, 114076), (304, 70547), (316, 67868), (361, 59408), (376, 57038), (632, 33934), (722, 29704), (752, 28519), (893, 24016), (1264, 16967), (1444, 14852), (1501, 14288), (1786, 12008), (2888, 7426), (3002, 7144), (3572, 6004), (3713, 5776)]