15881985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 31789056

約数和(自身を除く): 15907071

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 127, 315, 381, 397, 635, 889, 1143, 1191, 1905, 1985, 2667, 2779, 3573, 4445, 5715, 5955, 8001, 8337, 13335, 13895, 17865, 25011, 40005, 41685, 50419, 125055, 151257, 252095, 352933, 453771, 756285, 1058799, 1764665, 2268855, 3176397, 5293995, 15881985]

約数ペア:

[(1, 15881985), (3, 5293995), (5, 3176397), (7, 2268855), (9, 1764665), (15, 1058799), (21, 756285), (35, 453771), (45, 352933), (63, 252095), (105, 151257), (127, 125055), (315, 50419), (381, 41685), (397, 40005), (635, 25011), (889, 17865), (1143, 13895), (1191, 13335), (1905, 8337), (1985, 8001), (2667, 5955), (2779, 5715), (3573, 4445)]