20703480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{503}}^1$

素因数の和:538

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 51872520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 343, 392, 420, 490, 503, 588, 686, 735, 840, 980, 1006, 1029, 1176, 1372, 1470, 1509, 1715, 1960, 2012, 2058, 2515, 2744, 2940, 3018, 3430, 3521, 4024, 4116, 5030, 5145, 5880, 6036, 6860, 7042, 7545, 8232, 10060, 10290, 10563, 12072, 13720, 14084, 15090, 17605, 20120, 20580, 21126, 24647, 28168, 30180, 35210, 41160, 42252, 49294, 52815, 60360, 70420, 73941, 84504, 98588, 105630, 123235, 140840, 147882, 172529, 197176, 211260, 246470, 295764, 345058, 369705, 422520, 492940, 517587, 591528, 690116, 739410, 862645, 985880, 1035174, 1380232, 1478820, 1725290, 2070348, 2587935, 2957640, 3450580, 4140696, 5175870, 6901160, 10351740, 20703480]

約数ペア:

[(1, 20703480), (2, 10351740), (3, 6901160), (4, 5175870), (5, 4140696), (6, 3450580), (7, 2957640), (8, 2587935), (10, 2070348), (12, 1725290), (14, 1478820), (15, 1380232), (20, 1035174), (21, 985880), (24, 862645), (28, 739410), (30, 690116), (35, 591528), (40, 517587), (42, 492940), (49, 422520), (56, 369705), (60, 345058), (70, 295764), (84, 246470), (98, 211260), (105, 197176), (120, 172529), (140, 147882), (147, 140840), (168, 123235), (196, 105630), (210, 98588), (245, 84504), (280, 73941), (294, 70420), (343, 60360), (392, 52815), (420, 49294), (490, 42252), (503, 41160), (588, 35210), (686, 30180), (735, 28168), (840, 24647), (980, 21126), (1006, 20580), (1029, 20120), (1176, 17605), (1372, 15090), (1470, 14084), (1509, 13720), (1715, 12072), (1960, 10563), (2012, 10290), (2058, 10060), (2515, 8232), (2744, 7545), (2940, 7042), (3018, 6860), (3430, 6036), (3521, 5880), (4024, 5145), (4116, 5030)]