19895660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1277}}^1$

素因数の和:1346

約数の個数: 48

約数和(自身を含む): 45087840

約数和(自身を除く): 25192180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1277, 1558, 2554, 3116, 3895, 5108, 6385, 7790, 12770, 15580, 24263, 25540, 48526, 52357, 97052, 104714, 121315, 209428, 242630, 261785, 485260, 523570, 994783, 1047140, 1989566, 3979132, 4973915, 9947830, 19895660]

約数ペア:

[(1, 19895660), (2, 9947830), (4, 4973915), (5, 3979132), (10, 1989566), (19, 1047140), (20, 994783), (38, 523570), (41, 485260), (76, 261785), (82, 242630), (95, 209428), (164, 121315), (190, 104714), (205, 97052), (380, 52357), (410, 48526), (779, 25540), (820, 24263), (1277, 15580), (1558, 12770), (2554, 7790), (3116, 6385), (3895, 5108)]