20974080

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2731}}^1$

素因数の和:2757

約数の個数: 80

約数和(自身を含む): 67076064

約数和(自身を除く): 46101984

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2731, 3840, 5462, 7680, 8193, 10924, 13655, 16386, 21848, 27310, 32772, 40965, 43696, 54620, 65544, 81930, 87392, 109240, 131088, 163860, 174784, 218480, 262176, 327720, 349568, 436960, 524352, 655440, 699136, 873920, 1048704, 1310880, 1398272, 1747840, 2097408, 2621760, 3495680, 4194816, 5243520, 6991360, 10487040, 20974080]

約数ペア:

[(1, 20974080), (2, 10487040), (3, 6991360), (4, 5243520), (5, 4194816), (6, 3495680), (8, 2621760), (10, 2097408), (12, 1747840), (15, 1398272), (16, 1310880), (20, 1048704), (24, 873920), (30, 699136), (32, 655440), (40, 524352), (48, 436960), (60, 349568), (64, 327720), (80, 262176), (96, 218480), (120, 174784), (128, 163860), (160, 131088), (192, 109240), (240, 87392), (256, 81930), (320, 65544), (384, 54620), (480, 43696), (512, 40965), (640, 32772), (768, 27310), (960, 21848), (1280, 16386), (1536, 13655), (1920, 10924), (2560, 8193), (2731, 7680), (3840, 5462)]