20267128

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 26604872

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 61, 68, 119, 122, 136, 238, 244, 349, 427, 476, 488, 698, 854, 952, 1037, 1396, 1708, 2074, 2443, 2792, 3416, 4148, 4886, 5933, 7259, 8296, 9772, 11866, 14518, 19544, 21289, 23732, 29036, 41531, 42578, 47464, 58072, 83062, 85156, 149023, 166124, 170312, 298046, 332248, 361913, 596092, 723826, 1192184, 1447652, 2533391, 2895304, 5066782, 10133564, 20267128]

約数ペア:

[(1, 20267128), (2, 10133564), (4, 5066782), (7, 2895304), (8, 2533391), (14, 1447652), (17, 1192184), (28, 723826), (34, 596092), (56, 361913), (61, 332248), (68, 298046), (119, 170312), (122, 166124), (136, 149023), (238, 85156), (244, 83062), (349, 58072), (427, 47464), (476, 42578), (488, 41531), (698, 29036), (854, 23732), (952, 21289), (1037, 19544), (1396, 14518), (1708, 11866), (2074, 9772), (2443, 8296), (2792, 7259), (3416, 5933), (4148, 4886)]