21457611

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{10987}}^1$

素因数の和:11031

約数の個数: 24

約数和(自身を含む): 36568064

約数和(自身を除く): 15110453

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 10987, 32961, 76909, 98883, 230727, 340597, 692181, 1021791, 2384179, 3065373, 7152537, 21457611]

約数ペア:

[(1, 21457611), (3, 7152537), (7, 3065373), (9, 2384179), (21, 1021791), (31, 692181), (63, 340597), (93, 230727), (217, 98883), (279, 76909), (651, 32961), (1953, 10987)]