20978078

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 35925120

約数和(自身を除く): 14947042

約数列:

[1, 2, 11, 22, 29, 58, 131, 251, 262, 319, 502, 638, 1441, 2761, 2882, 3799, 5522, 7279, 7598, 14558, 32881, 41789, 65762, 80069, 83578, 160138, 361691, 723382, 953549, 1907098, 10489039, 20978078]

約数ペア:

[(1, 20978078), (2, 10489039), (11, 1907098), (22, 953549), (29, 723382), (58, 361691), (131, 160138), (251, 83578), (262, 80069), (319, 65762), (502, 41789), (638, 32881), (1441, 14558), (2761, 7598), (2882, 7279), (3799, 5522)]