28739571

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{223}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 49158144

約数和(自身を除く): 20418573

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 223, 323, 357, 361, 399, 669, 969, 1083, 1561, 2261, 2527, 3791, 4237, 4683, 6137, 6783, 7581, 11373, 12711, 18411, 26537, 29659, 42959, 72029, 79611, 80503, 88977, 128877, 216087, 241509, 504203, 563521, 1368551, 1512609, 1690563, 4105653, 9579857, 28739571]

約数ペア:

[(1, 28739571), (3, 9579857), (7, 4105653), (17, 1690563), (19, 1512609), (21, 1368551), (51, 563521), (57, 504203), (119, 241509), (133, 216087), (223, 128877), (323, 88977), (357, 80503), (361, 79611), (399, 72029), (669, 42959), (969, 29659), (1083, 26537), (1561, 18411), (2261, 12711), (2527, 11373), (3791, 7581), (4237, 6783), (4683, 6137)]