19653620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1777}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 47792640

約数和(自身を除く): 28139020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 1777, 2212, 2765, 3554, 5530, 7108, 8885, 11060, 12439, 17770, 24878, 35540, 49756, 62195, 124390, 140383, 248780, 280766, 561532, 701915, 982681, 1403830, 1965362, 2807660, 3930724, 4913405, 9826810, 19653620]

約数ペア:

[(1, 19653620), (2, 9826810), (4, 4913405), (5, 3930724), (7, 2807660), (10, 1965362), (14, 1403830), (20, 982681), (28, 701915), (35, 561532), (70, 280766), (79, 248780), (140, 140383), (158, 124390), (316, 62195), (395, 49756), (553, 35540), (790, 24878), (1106, 17770), (1580, 12439), (1777, 11060), (2212, 8885), (2765, 7108), (3554, 5530)]