21887349

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 32997888

約数和(自身を除く): 11110539

約数列:

[1, 3, 11, 33, 61, 83, 131, 183, 249, 393, 671, 913, 1441, 2013, 2739, 4323, 5063, 7991, 10873, 15189, 23973, 32619, 55693, 87901, 119603, 167079, 263703, 358809, 663253, 1989759, 7295783, 21887349]

約数ペア:

[(1, 21887349), (3, 7295783), (11, 1989759), (33, 663253), (61, 358809), (83, 263703), (131, 167079), (183, 119603), (249, 87901), (393, 55693), (671, 32619), (913, 23973), (1441, 15189), (2013, 10873), (2739, 7991), (4323, 5063)]