20941920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14543}}^1$

素因数の和:14564

約数の個数: 72

約数和(自身を含む): 71469216

約数和(自身を除く): 50527296

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14543, 29086, 43629, 58172, 72715, 87258, 116344, 130887, 145430, 174516, 218145, 232688, 261774, 290860, 349032, 436290, 465376, 523548, 581720, 654435, 698064, 872580, 1047096, 1163440, 1308870, 1396128, 1745160, 2094192, 2326880, 2617740, 3490320, 4188384, 5235480, 6980640, 10470960, 20941920]

約数ペア:

[(1, 20941920), (2, 10470960), (3, 6980640), (4, 5235480), (5, 4188384), (6, 3490320), (8, 2617740), (9, 2326880), (10, 2094192), (12, 1745160), (15, 1396128), (16, 1308870), (18, 1163440), (20, 1047096), (24, 872580), (30, 698064), (32, 654435), (36, 581720), (40, 523548), (45, 465376), (48, 436290), (60, 349032), (72, 290860), (80, 261774), (90, 232688), (96, 218145), (120, 174516), (144, 145430), (160, 130887), (180, 116344), (240, 87258), (288, 72715), (360, 58172), (480, 43629), (720, 29086), (1440, 14543)]