643648

素因数分解:

$2^6\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:214

約数の個数: 28

約数和(自身を含む): 1303020

約数和(自身を除く): 659372

約数列:

[1, 2, 4, 8, 16, 32, 64, 89, 113, 178, 226, 356, 452, 712, 904, 1424, 1808, 2848, 3616, 5696, 7232, 10057, 20114, 40228, 80456, 160912, 321824, 643648]

約数ペア:

[(1, 643648), (2, 321824), (4, 160912), (8, 80456), (16, 40228), (32, 20114), (64, 10057), (89, 7232), (113, 5696), (178, 3616), (226, 2848), (356, 1808), (452, 1424), (712, 904)]