81939340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25447}}^1$

素因数の和:25486

約数の個数: 48

約数和(自身を含む): 205212672

約数和(自身を除く): 123273332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 25447, 50894, 101788, 127235, 178129, 254470, 356258, 508940, 585281, 712516, 890645, 1170562, 1781290, 2341124, 2926405, 3562580, 4096967, 5852810, 8193934, 11705620, 16387868, 20484835, 40969670, 81939340]

約数ペア:

[(1, 81939340), (2, 40969670), (4, 20484835), (5, 16387868), (7, 11705620), (10, 8193934), (14, 5852810), (20, 4096967), (23, 3562580), (28, 2926405), (35, 2341124), (46, 1781290), (70, 1170562), (92, 890645), (115, 712516), (140, 585281), (161, 508940), (230, 356258), (322, 254470), (460, 178129), (644, 127235), (805, 101788), (1610, 50894), (3220, 25447)]