18781920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13043}}^1$

素因数の和:13064

約数の個数: 72

約数和(自身を含む): 64098216

約数和(自身を除く): 45316296

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, 13043, 26086, 39129, 52172, 65215, 78258, 104344, 117387, 130430, 156516, 195645, 208688, 234774, 260860, 313032, 391290, 417376, 469548, 521720, 586935, 626064, 782580, 939096, 1043440, 1173870, 1252128, 1565160, 1878192, 2086880, 2347740, 3130320, 3756384, 4695480, 6260640, 9390960, 18781920]

約数ペア:

[(1, 18781920), (2, 9390960), (3, 6260640), (4, 4695480), (5, 3756384), (6, 3130320), (8, 2347740), (9, 2086880), (10, 1878192), (12, 1565160), (15, 1252128), (16, 1173870), (18, 1043440), (20, 939096), (24, 782580), (30, 626064), (32, 586935), (36, 521720), (40, 469548), (45, 417376), (48, 391290), (60, 313032), (72, 260860), (80, 234774), (90, 208688), (96, 195645), (120, 156516), (144, 130430), (160, 117387), (180, 104344), (240, 78258), (288, 65215), (360, 52172), (480, 39129), (720, 26086), (1440, 13043)]