21971355

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{167}}^1\times {\mathrm{179}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 19396965

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 167, 179, 245, 501, 537, 735, 835, 895, 1169, 1253, 2505, 2685, 3507, 3759, 5845, 6265, 8183, 8771, 17535, 18795, 24549, 26313, 29893, 40915, 43855, 89679, 122745, 131565, 149465, 209251, 448395, 627753, 1046255, 1464757, 3138765, 4394271, 7323785, 21971355]

約数ペア:

[(1, 21971355), (3, 7323785), (5, 4394271), (7, 3138765), (15, 1464757), (21, 1046255), (35, 627753), (49, 448395), (105, 209251), (147, 149465), (167, 131565), (179, 122745), (245, 89679), (501, 43855), (537, 40915), (735, 29893), (835, 26313), (895, 24549), (1169, 18795), (1253, 17535), (2505, 8771), (2685, 8183), (3507, 6265), (3759, 5845)]