20784704

素因数分解:

$2^6\times {\mathrm{41}}^1\times {\mathrm{89}}^2$

素因数の和:231

約数の個数: 42

約数和(自身を含む): 42730674

約数和(自身を除く): 21945970

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 89, 164, 178, 328, 356, 656, 712, 1312, 1424, 2624, 2848, 3649, 5696, 7298, 7921, 14596, 15842, 29192, 31684, 58384, 63368, 116768, 126736, 233536, 253472, 324761, 506944, 649522, 1299044, 2598088, 5196176, 10392352, 20784704]

約数ペア:

[(1, 20784704), (2, 10392352), (4, 5196176), (8, 2598088), (16, 1299044), (32, 649522), (41, 506944), (64, 324761), (82, 253472), (89, 233536), (164, 126736), (178, 116768), (328, 63368), (356, 58384), (656, 31684), (712, 29192), (1312, 15842), (1424, 14596), (2624, 7921), (2848, 7298), (3649, 5696)]