21789196

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{3463}}^1$

素因数の和:3502

約数の個数: 36

約数和(自身を含む): 45149776

約数和(自身を除く): 23360580

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 121, 143, 242, 286, 484, 572, 1573, 3146, 3463, 6292, 6926, 13852, 38093, 45019, 76186, 90038, 152372, 180076, 419023, 495209, 838046, 990418, 1676092, 1980836, 5447299, 10894598, 21789196]

約数ペア:

[(1, 21789196), (2, 10894598), (4, 5447299), (11, 1980836), (13, 1676092), (22, 990418), (26, 838046), (44, 495209), (52, 419023), (121, 180076), (143, 152372), (242, 90038), (286, 76186), (484, 45019), (572, 38093), (1573, 13852), (3146, 6926), (3463, 6292)]