21154688

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 44982000

約数和(自身を除く): 23827312

約数列:

[1, 2, 4, 8, 16, 29, 32, 41, 58, 64, 82, 116, 128, 139, 164, 232, 278, 328, 464, 556, 656, 928, 1112, 1189, 1312, 1856, 2224, 2378, 2624, 3712, 4031, 4448, 4756, 5248, 5699, 8062, 8896, 9512, 11398, 16124, 17792, 19024, 22796, 32248, 38048, 45592, 64496, 76096, 91184, 128992, 152192, 165271, 182368, 257984, 330542, 364736, 515968, 661084, 729472, 1322168, 2644336, 5288672, 10577344, 21154688]

約数ペア:

[(1, 21154688), (2, 10577344), (4, 5288672), (8, 2644336), (16, 1322168), (29, 729472), (32, 661084), (41, 515968), (58, 364736), (64, 330542), (82, 257984), (116, 182368), (128, 165271), (139, 152192), (164, 128992), (232, 91184), (278, 76096), (328, 64496), (464, 45592), (556, 38048), (656, 32248), (928, 22796), (1112, 19024), (1189, 17792), (1312, 16124), (1856, 11398), (2224, 9512), (2378, 8896), (2624, 8062), (3712, 5699), (4031, 5248), (4448, 4756)]