21017344

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 45990000

約数和(自身を除く): 24972656

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 38, 58, 64, 76, 116, 128, 149, 152, 232, 256, 298, 304, 464, 551, 596, 608, 928, 1102, 1192, 1216, 1856, 2204, 2384, 2432, 2831, 3712, 4321, 4408, 4768, 4864, 5662, 7424, 8642, 8816, 9536, 11324, 17284, 17632, 19072, 22648, 34568, 35264, 38144, 45296, 69136, 70528, 82099, 90592, 138272, 141056, 164198, 181184, 276544, 328396, 362368, 553088, 656792, 724736, 1106176, 1313584, 2627168, 5254336, 10508672, 21017344]

約数ペア:

[(1, 21017344), (2, 10508672), (4, 5254336), (8, 2627168), (16, 1313584), (19, 1106176), (29, 724736), (32, 656792), (38, 553088), (58, 362368), (64, 328396), (76, 276544), (116, 181184), (128, 164198), (149, 141056), (152, 138272), (232, 90592), (256, 82099), (298, 70528), (304, 69136), (464, 45296), (551, 38144), (596, 35264), (608, 34568), (928, 22648), (1102, 19072), (1192, 17632), (1216, 17284), (1856, 11324), (2204, 9536), (2384, 8816), (2432, 8642), (2831, 7424), (3712, 5662), (4321, 4864), (4408, 4768)]