21528256

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:497

約数の個数: 56

約数和(自身を含む): 46305216

約数和(自身を除く): 24776960

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 47, 64, 68, 94, 136, 188, 272, 376, 421, 544, 752, 799, 842, 1088, 1504, 1598, 1684, 3008, 3196, 3368, 6392, 6736, 7157, 12784, 13472, 14314, 19787, 25568, 26944, 28628, 39574, 51136, 57256, 79148, 114512, 158296, 229024, 316592, 336379, 458048, 633184, 672758, 1266368, 1345516, 2691032, 5382064, 10764128, 21528256]

約数ペア:

[(1, 21528256), (2, 10764128), (4, 5382064), (8, 2691032), (16, 1345516), (17, 1266368), (32, 672758), (34, 633184), (47, 458048), (64, 336379), (68, 316592), (94, 229024), (136, 158296), (188, 114512), (272, 79148), (376, 57256), (421, 51136), (544, 39574), (752, 28628), (799, 26944), (842, 25568), (1088, 19787), (1504, 14314), (1598, 13472), (1684, 12784), (3008, 7157), (3196, 6736), (3368, 6392)]