20917856

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 43563744

約数和(自身を除く): 22645888

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 92, 97, 184, 194, 293, 368, 388, 586, 736, 776, 1172, 1552, 2231, 2344, 3104, 4462, 4688, 6739, 8924, 9376, 13478, 17848, 26956, 28421, 35696, 53912, 56842, 71392, 107824, 113684, 215648, 227368, 454736, 653683, 909472, 1307366, 2614732, 5229464, 10458928, 20917856]

約数ペア:

[(1, 20917856), (2, 10458928), (4, 5229464), (8, 2614732), (16, 1307366), (23, 909472), (32, 653683), (46, 454736), (92, 227368), (97, 215648), (184, 113684), (194, 107824), (293, 71392), (368, 56842), (388, 53912), (586, 35696), (736, 28421), (776, 26956), (1172, 17848), (1552, 13478), (2231, 9376), (2344, 8924), (3104, 6739), (4462, 4688)]