21078666

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{967}}^1$

素因数の和:1155

約数の個数: 48

約数和(自身を含む): 52550784

約数和(自身を除く): 31472118

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 173, 346, 519, 967, 1038, 1211, 1557, 1934, 2422, 2901, 3114, 3633, 5802, 6769, 7266, 8703, 10899, 13538, 17406, 20307, 21798, 40614, 60921, 121842, 167291, 334582, 501873, 1003746, 1171037, 1505619, 2342074, 3011238, 3513111, 7026222, 10539333, 21078666]

約数ペア:

[(1, 21078666), (2, 10539333), (3, 7026222), (6, 3513111), (7, 3011238), (9, 2342074), (14, 1505619), (18, 1171037), (21, 1003746), (42, 501873), (63, 334582), (126, 167291), (173, 121842), (346, 60921), (519, 40614), (967, 21798), (1038, 20307), (1211, 17406), (1557, 13538), (1934, 10899), (2422, 8703), (2901, 7266), (3114, 6769), (3633, 5802)]