21169280

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:158

約数の個数: 128

約数和(自身を含む): 57576960

約数和(自身を除く): 36407680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 97, 110, 124, 128, 155, 160, 176, 194, 220, 248, 310, 320, 341, 352, 388, 440, 485, 496, 620, 640, 682, 704, 776, 880, 970, 992, 1067, 1240, 1364, 1408, 1552, 1705, 1760, 1940, 1984, 2134, 2480, 2728, 3007, 3104, 3410, 3520, 3880, 3968, 4268, 4960, 5335, 5456, 6014, 6208, 6820, 7040, 7760, 8536, 9920, 10670, 10912, 12028, 12416, 13640, 15035, 15520, 17072, 19840, 21340, 21824, 24056, 27280, 30070, 31040, 33077, 34144, 42680, 43648, 48112, 54560, 60140, 62080, 66154, 68288, 85360, 96224, 109120, 120280, 132308, 136576, 165385, 170720, 192448, 218240, 240560, 264616, 330770, 341440, 384896, 481120, 529232, 661540, 682880, 962240, 1058464, 1323080, 1924480, 2116928, 2646160, 4233856, 5292320, 10584640, 21169280]

約数ペア:

[(1, 21169280), (2, 10584640), (4, 5292320), (5, 4233856), (8, 2646160), (10, 2116928), (11, 1924480), (16, 1323080), (20, 1058464), (22, 962240), (31, 682880), (32, 661540), (40, 529232), (44, 481120), (55, 384896), (62, 341440), (64, 330770), (80, 264616), (88, 240560), (97, 218240), (110, 192448), (124, 170720), (128, 165385), (155, 136576), (160, 132308), (176, 120280), (194, 109120), (220, 96224), (248, 85360), (310, 68288), (320, 66154), (341, 62080), (352, 60140), (388, 54560), (440, 48112), (485, 43648), (496, 42680), (620, 34144), (640, 33077), (682, 31040), (704, 30070), (776, 27280), (880, 24056), (970, 21824), (992, 21340), (1067, 19840), (1240, 17072), (1364, 15520), (1408, 15035), (1552, 13640), (1705, 12416), (1760, 12028), (1940, 10912), (1984, 10670), (2134, 9920), (2480, 8536), (2728, 7760), (3007, 7040), (3104, 6820), (3410, 6208), (3520, 6014), (3880, 5456), (3968, 5335), (4268, 4960)]