21907095

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 64

約数和(自身を含む): 43008000

約数和(自身を除く): 21100905

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 79, 95, 105, 133, 139, 237, 285, 395, 399, 417, 553, 665, 695, 973, 1185, 1501, 1659, 1995, 2085, 2641, 2765, 2919, 4503, 4865, 7505, 7923, 8295, 10507, 10981, 13205, 14595, 18487, 22515, 31521, 32943, 39615, 52535, 54905, 55461, 76867, 92435, 157605, 164715, 208639, 230601, 277305, 384335, 625917, 1043195, 1153005, 1460473, 3129585, 4381419, 7302365, 21907095]

約数ペア:

[(1, 21907095), (3, 7302365), (5, 4381419), (7, 3129585), (15, 1460473), (19, 1153005), (21, 1043195), (35, 625917), (57, 384335), (79, 277305), (95, 230601), (105, 208639), (133, 164715), (139, 157605), (237, 92435), (285, 76867), (395, 55461), (399, 54905), (417, 52535), (553, 39615), (665, 32943), (695, 31521), (973, 22515), (1185, 18487), (1501, 14595), (1659, 13205), (1995, 10981), (2085, 10507), (2641, 8295), (2765, 7923), (2919, 7505), (4503, 4865)]