21930580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{409}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 52899840

約数和(自身を除く): 30969260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 383, 409, 766, 818, 1532, 1636, 1915, 2045, 2681, 2863, 3830, 4090, 5362, 5726, 7660, 8180, 10724, 11452, 13405, 14315, 26810, 28630, 53620, 57260, 156647, 313294, 626588, 783235, 1096529, 1566470, 2193058, 3132940, 4386116, 5482645, 10965290, 21930580]

約数ペア:

[(1, 21930580), (2, 10965290), (4, 5482645), (5, 4386116), (7, 3132940), (10, 2193058), (14, 1566470), (20, 1096529), (28, 783235), (35, 626588), (70, 313294), (140, 156647), (383, 57260), (409, 53620), (766, 28630), (818, 26810), (1532, 14315), (1636, 13405), (1915, 11452), (2045, 10724), (2681, 8180), (2863, 7660), (3830, 5726), (4090, 5362)]