21976540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{383}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 49029120

約数和(自身を除く): 27052580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 151, 190, 302, 380, 383, 604, 755, 766, 1510, 1532, 1915, 2869, 3020, 3830, 5738, 7277, 7660, 11476, 14345, 14554, 28690, 29108, 36385, 57380, 57833, 72770, 115666, 145540, 231332, 289165, 578330, 1098827, 1156660, 2197654, 4395308, 5494135, 10988270, 21976540]

約数ペア:

[(1, 21976540), (2, 10988270), (4, 5494135), (5, 4395308), (10, 2197654), (19, 1156660), (20, 1098827), (38, 578330), (76, 289165), (95, 231332), (151, 145540), (190, 115666), (302, 72770), (380, 57833), (383, 57380), (604, 36385), (755, 29108), (766, 28690), (1510, 14554), (1532, 14345), (1915, 11476), (2869, 7660), (3020, 7277), (3830, 5738)]