21474978

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1583}}^1$

素因数の和:1631

約数の個数: 64

約数和(自身を含む): 54743040

約数和(自身を除く): 33268062

約数列:

[1, 2, 3, 6, 7, 14, 17, 19, 21, 34, 38, 42, 51, 57, 102, 114, 119, 133, 238, 266, 323, 357, 399, 646, 714, 798, 969, 1583, 1938, 2261, 3166, 4522, 4749, 6783, 9498, 11081, 13566, 22162, 26911, 30077, 33243, 53822, 60154, 66486, 80733, 90231, 161466, 180462, 188377, 210539, 376754, 421078, 511309, 565131, 631617, 1022618, 1130262, 1263234, 1533927, 3067854, 3579163, 7158326, 10737489, 21474978]

約数ペア:

[(1, 21474978), (2, 10737489), (3, 7158326), (6, 3579163), (7, 3067854), (14, 1533927), (17, 1263234), (19, 1130262), (21, 1022618), (34, 631617), (38, 565131), (42, 511309), (51, 421078), (57, 376754), (102, 210539), (114, 188377), (119, 180462), (133, 161466), (238, 90231), (266, 80733), (323, 66486), (357, 60154), (399, 53822), (646, 33243), (714, 30077), (798, 26911), (969, 22162), (1583, 13566), (1938, 11081), (2261, 9498), (3166, 6783), (4522, 4749)]