21640218

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4003}}^1$

素因数の和:4078

約数の個数: 32

約数和(自身を含む): 46702656

約数和(自身を除く): 25062438

約数列:

[1, 2, 3, 6, 17, 34, 51, 53, 102, 106, 159, 318, 901, 1802, 2703, 4003, 5406, 8006, 12009, 24018, 68051, 136102, 204153, 212159, 408306, 424318, 636477, 1272954, 3606703, 7213406, 10820109, 21640218]

約数ペア:

[(1, 21640218), (2, 10820109), (3, 7213406), (6, 3606703), (17, 1272954), (34, 636477), (51, 424318), (53, 408306), (102, 212159), (106, 204153), (159, 136102), (318, 68051), (901, 24018), (1802, 12009), (2703, 8006), (4003, 5406)]