21658816

素因数分解:

$2^6\times {\mathrm{17}}^2\times {\mathrm{1171}}^1$

素因数の和:1217

約数の個数: 42

約数和(自身を含む): 45695108

約数和(自身を除く): 24036292

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 136, 272, 289, 544, 578, 1088, 1156, 1171, 2312, 2342, 4624, 4684, 9248, 9368, 18496, 18736, 19907, 37472, 39814, 74944, 79628, 159256, 318512, 338419, 637024, 676838, 1274048, 1353676, 2707352, 5414704, 10829408, 21658816]

約数ペア:

[(1, 21658816), (2, 10829408), (4, 5414704), (8, 2707352), (16, 1353676), (17, 1274048), (32, 676838), (34, 637024), (64, 338419), (68, 318512), (136, 159256), (272, 79628), (289, 74944), (544, 39814), (578, 37472), (1088, 19907), (1156, 18736), (1171, 18496), (2312, 9368), (2342, 9248), (4624, 4684)]