27978980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 60540480

約数和(自身を除く): 32561500

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 131, 181, 236, 262, 295, 362, 524, 590, 655, 724, 905, 1180, 1310, 1810, 2620, 3620, 7729, 10679, 15458, 21358, 23711, 30916, 38645, 42716, 47422, 53395, 77290, 94844, 106790, 118555, 154580, 213580, 237110, 474220, 1398949, 2797898, 5595796, 6994745, 13989490, 27978980]

約数ペア:

[(1, 27978980), (2, 13989490), (4, 6994745), (5, 5595796), (10, 2797898), (20, 1398949), (59, 474220), (118, 237110), (131, 213580), (181, 154580), (236, 118555), (262, 106790), (295, 94844), (362, 77290), (524, 53395), (590, 47422), (655, 42716), (724, 38645), (905, 30916), (1180, 23711), (1310, 21358), (1810, 15458), (2620, 10679), (3620, 7729)]