78236320

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^2\times {\mathrm{97}}^1$

素因数の和:254

約数の個数: 72

約数和(自身を含む): 189405972

約数和(自身を除く): 111169652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 97, 142, 160, 194, 284, 355, 388, 485, 568, 710, 776, 970, 1136, 1420, 1552, 1940, 2272, 2840, 3104, 3880, 5041, 5680, 6887, 7760, 10082, 11360, 13774, 15520, 20164, 25205, 27548, 34435, 40328, 50410, 55096, 68870, 80656, 100820, 110192, 137740, 161312, 201640, 220384, 275480, 403280, 488977, 550960, 806560, 977954, 1101920, 1955908, 2444885, 3911816, 4889770, 7823632, 9779540, 15647264, 19559080, 39118160, 78236320]

約数ペア:

[(1, 78236320), (2, 39118160), (4, 19559080), (5, 15647264), (8, 9779540), (10, 7823632), (16, 4889770), (20, 3911816), (32, 2444885), (40, 1955908), (71, 1101920), (80, 977954), (97, 806560), (142, 550960), (160, 488977), (194, 403280), (284, 275480), (355, 220384), (388, 201640), (485, 161312), (568, 137740), (710, 110192), (776, 100820), (970, 80656), (1136, 68870), (1420, 55096), (1552, 50410), (1940, 40328), (2272, 34435), (2840, 27548), (3104, 25205), (3880, 20164), (5041, 15520), (5680, 13774), (6887, 11360), (7760, 10082)]