21720960

素因数分解:

$2^7\times 3^4\times 5^1\times {\mathrm{419}}^1$

素因数の和:450

約数の個数: 160

約数和(自身を含む): 77754600

約数和(自身を除く): 56033640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 128, 135, 144, 160, 162, 180, 192, 216, 240, 270, 288, 320, 324, 360, 384, 405, 419, 432, 480, 540, 576, 640, 648, 720, 810, 838, 864, 960, 1080, 1152, 1257, 1296, 1440, 1620, 1676, 1728, 1920, 2095, 2160, 2514, 2592, 2880, 3240, 3352, 3456, 3771, 4190, 4320, 5028, 5184, 5760, 6285, 6480, 6704, 7542, 8380, 8640, 10056, 10368, 11313, 12570, 12960, 13408, 15084, 16760, 17280, 18855, 20112, 22626, 25140, 25920, 26816, 30168, 33520, 33939, 37710, 40224, 45252, 50280, 51840, 53632, 56565, 60336, 67040, 67878, 75420, 80448, 90504, 100560, 113130, 120672, 134080, 135756, 150840, 160896, 169695, 181008, 201120, 226260, 241344, 268160, 271512, 301680, 339390, 362016, 402240, 452520, 482688, 543024, 603360, 678780, 724032, 804480, 905040, 1086048, 1206720, 1357560, 1448064, 1810080, 2172096, 2413440, 2715120, 3620160, 4344192, 5430240, 7240320, 10860480, 21720960]

約数ペア:

[(1, 21720960), (2, 10860480), (3, 7240320), (4, 5430240), (5, 4344192), (6, 3620160), (8, 2715120), (9, 2413440), (10, 2172096), (12, 1810080), (15, 1448064), (16, 1357560), (18, 1206720), (20, 1086048), (24, 905040), (27, 804480), (30, 724032), (32, 678780), (36, 603360), (40, 543024), (45, 482688), (48, 452520), (54, 402240), (60, 362016), (64, 339390), (72, 301680), (80, 271512), (81, 268160), (90, 241344), (96, 226260), (108, 201120), (120, 181008), (128, 169695), (135, 160896), (144, 150840), (160, 135756), (162, 134080), (180, 120672), (192, 113130), (216, 100560), (240, 90504), (270, 80448), (288, 75420), (320, 67878), (324, 67040), (360, 60336), (384, 56565), (405, 53632), (419, 51840), (432, 50280), (480, 45252), (540, 40224), (576, 37710), (640, 33939), (648, 33520), (720, 30168), (810, 26816), (838, 25920), (864, 25140), (960, 22626), (1080, 20112), (1152, 18855), (1257, 17280), (1296, 16760), (1440, 15084), (1620, 13408), (1676, 12960), (1728, 12570), (1920, 11313), (2095, 10368), (2160, 10056), (2514, 8640), (2592, 8380), (2880, 7542), (3240, 6704), (3352, 6480), (3456, 6285), (3771, 5760), (4190, 5184), (4320, 5028)]