21311230178

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^3\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1520

約数の個数: 64

約数和(自身を含む): 38799661056

約数和(自身を除く): 17488430878

約数列:

[1, 2, 7, 14, 31, 37, 62, 74, 217, 259, 434, 518, 961, 1147, 1381, 1922, 2294, 2762, 6727, 8029, 9667, 13454, 16058, 19334, 29791, 35557, 42811, 51097, 59582, 71114, 85622, 102194, 208537, 248899, 299677, 357679, 417074, 497798, 599354, 715358, 1102267, 1327141, 1584007, 2204534, 2654282, 3168014, 7715869, 9289987, 11088049, 15431738, 18579974, 22176098, 41141371, 49104217, 82282742, 98208434, 287989597, 343729519, 575979194, 687459038, 1522230727, 3044461454, 10655615089, 21311230178]

約数ペア:

[(1, 21311230178), (2, 10655615089), (7, 3044461454), (14, 1522230727), (31, 687459038), (37, 575979194), (62, 343729519), (74, 287989597), (217, 98208434), (259, 82282742), (434, 49104217), (518, 41141371), (961, 22176098), (1147, 18579974), (1381, 15431738), (1922, 11088049), (2294, 9289987), (2762, 7715869), (6727, 3168014), (8029, 2654282), (9667, 2204534), (13454, 1584007), (16058, 1327141), (19334, 1102267), (29791, 715358), (35557, 599354), (42811, 497798), (51097, 417074), (59582, 357679), (71114, 299677), (85622, 248899), (102194, 208537)]