20470365

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 16595235

約数列:

[1, 3, 5, 9, 15, 43, 45, 71, 129, 149, 213, 215, 355, 387, 447, 639, 645, 745, 1065, 1341, 1935, 2235, 3053, 3195, 6407, 6705, 9159, 10579, 15265, 19221, 27477, 31737, 32035, 45795, 52895, 57663, 95211, 96105, 137385, 158685, 288315, 454897, 476055, 1364691, 2274485, 4094073, 6823455, 20470365]

約数ペア:

[(1, 20470365), (3, 6823455), (5, 4094073), (9, 2274485), (15, 1364691), (43, 476055), (45, 454897), (71, 288315), (129, 158685), (149, 137385), (213, 96105), (215, 95211), (355, 57663), (387, 52895), (447, 45795), (639, 32035), (645, 31737), (745, 27477), (1065, 19221), (1341, 15265), (1935, 10579), (2235, 9159), (3053, 6705), (3195, 6407)]