20121571317

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{17623}}^1$

素因数の和:17889

約数の個数: 32

約数和(自身を含む): 28139747328

約数和(自身を除く): 8018176011

約数列:

[1, 3, 43, 53, 129, 159, 167, 501, 2279, 6837, 7181, 8851, 17623, 21543, 26553, 52869, 380593, 757789, 934019, 1141779, 2273367, 2802057, 2943041, 8829123, 40162817, 120488451, 126550763, 155981173, 379652289, 467943519, 6707190439, 20121571317]

約数ペア:

[(1, 20121571317), (3, 6707190439), (43, 467943519), (53, 379652289), (129, 155981173), (159, 126550763), (167, 120488451), (501, 40162817), (2279, 8829123), (6837, 2943041), (7181, 2802057), (8851, 2273367), (17623, 1141779), (21543, 934019), (26553, 757789), (52869, 380593)]