278639284

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:450

約数の個数: 108

約数和(自身を含む): 645294720

約数和(自身を除く): 366655436

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 49, 62, 77, 98, 121, 124, 154, 196, 217, 242, 308, 341, 379, 434, 484, 539, 682, 758, 847, 868, 1078, 1364, 1516, 1519, 1694, 2156, 2387, 2653, 3038, 3388, 3751, 4169, 4774, 5306, 5929, 6076, 7502, 8338, 9548, 10612, 11749, 11858, 15004, 16676, 16709, 18571, 23498, 23716, 26257, 29183, 33418, 37142, 45859, 46996, 52514, 58366, 66836, 74284, 82243, 91718, 105028, 116732, 129239, 164486, 183436, 183799, 204281, 258478, 321013, 328972, 367598, 408562, 516956, 575701, 642026, 735196, 817124, 904673, 1151402, 1284052, 1421629, 1809346, 2247091, 2302804, 2843258, 3618692, 4494182, 5686516, 6332711, 8988364, 9951403, 12665422, 19902806, 25330844, 39805612, 69659821, 139319642, 278639284]

約数ペア:

[(1, 278639284), (2, 139319642), (4, 69659821), (7, 39805612), (11, 25330844), (14, 19902806), (22, 12665422), (28, 9951403), (31, 8988364), (44, 6332711), (49, 5686516), (62, 4494182), (77, 3618692), (98, 2843258), (121, 2302804), (124, 2247091), (154, 1809346), (196, 1421629), (217, 1284052), (242, 1151402), (308, 904673), (341, 817124), (379, 735196), (434, 642026), (484, 575701), (539, 516956), (682, 408562), (758, 367598), (847, 328972), (868, 321013), (1078, 258478), (1364, 204281), (1516, 183799), (1519, 183436), (1694, 164486), (2156, 129239), (2387, 116732), (2653, 105028), (3038, 91718), (3388, 82243), (3751, 74284), (4169, 66836), (4774, 58366), (5306, 52514), (5929, 46996), (6076, 45859), (7502, 37142), (8338, 33418), (9548, 29183), (10612, 26257), (11749, 23716), (11858, 23498), (15004, 18571), (16676, 16709)]