21270116

素因数分解:

$2^2\times 7^3\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 44688000

約数和(自身を除く): 23417884

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 74, 98, 148, 196, 259, 343, 419, 518, 686, 838, 1036, 1372, 1676, 1813, 2933, 3626, 5866, 7252, 11732, 12691, 15503, 20531, 25382, 31006, 41062, 50764, 62012, 82124, 108521, 143717, 217042, 287434, 434084, 574868, 759647, 1519294, 3038588, 5317529, 10635058, 21270116]

約数ペア:

[(1, 21270116), (2, 10635058), (4, 5317529), (7, 3038588), (14, 1519294), (28, 759647), (37, 574868), (49, 434084), (74, 287434), (98, 217042), (148, 143717), (196, 108521), (259, 82124), (343, 62012), (419, 50764), (518, 41062), (686, 31006), (838, 25382), (1036, 20531), (1372, 15503), (1676, 12691), (1813, 11732), (2933, 7252), (3626, 5866)]