21985047

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1307}}^1$

素因数の和:1412

約数の個数: 32

約数和(自身を含む): 37670400

約数和(自身を除く): 15685353

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1307, 1869, 2403, 3921, 5607, 9149, 11763, 16821, 27447, 35289, 82341, 116323, 247023, 348969, 814261, 1046907, 2442783, 3140721, 7328349, 21985047]

約数ペア:

[(1, 21985047), (3, 7328349), (7, 3140721), (9, 2442783), (21, 1046907), (27, 814261), (63, 348969), (89, 247023), (189, 116323), (267, 82341), (623, 35289), (801, 27447), (1307, 16821), (1869, 11763), (2403, 9149), (3921, 5607)]