21358980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{118661}}^1$

素因数の和:118676

約数の個数: 36

約数和(自身を含む): 64789452

約数和(自身を除く): 43430472

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 118661, 237322, 355983, 474644, 593305, 711966, 1067949, 1186610, 1423932, 1779915, 2135898, 2373220, 3559830, 4271796, 5339745, 7119660, 10679490, 21358980]

約数ペア:

[(1, 21358980), (2, 10679490), (3, 7119660), (4, 5339745), (5, 4271796), (6, 3559830), (9, 2373220), (10, 2135898), (12, 1779915), (15, 1423932), (18, 1186610), (20, 1067949), (30, 711966), (36, 593305), (45, 474644), (60, 355983), (90, 237322), (180, 118661)]