215217145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{1663}}^1$

素因数の和:1873

約数の個数: 32

約数和(自身を含む): 305270784

約数和(自身を除く): 90053639

約数列:

[1, 5, 11, 13, 55, 65, 143, 181, 715, 905, 1663, 1991, 2353, 8315, 9955, 11765, 18293, 21619, 25883, 91465, 108095, 129415, 237809, 301003, 1189045, 1505015, 3311033, 3913039, 16555165, 19565195, 43043429, 215217145]

約数ペア:

[(1, 215217145), (5, 43043429), (11, 19565195), (13, 16555165), (55, 3913039), (65, 3311033), (143, 1505015), (181, 1189045), (715, 301003), (905, 237809), (1663, 129415), (1991, 108095), (2353, 91465), (8315, 25883), (9955, 21619), (11765, 18293)]