20851422720

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{421}}^1\times {\mathrm{6449}}^1$

素因数の和:6896

約数の個数: 160

約数和(自身を含む): 66828088800

約数和(自身を除く): 45976666080

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, 421, 480, 512, 640, 768, 842, 960, 1263, 1280, 1536, 1684, 1920, 2105, 2526, 2560, 3368, 3840, 4210, 5052, 6315, 6449, 6736, 7680, 8420, 10104, 12630, 12898, 13472, 16840, 19347, 20208, 25260, 25796, 26944, 32245, 33680, 38694, 40416, 50520, 51592, 53888, 64490, 67360, 77388, 80832, 96735, 101040, 103184, 107776, 128980, 134720, 154776, 161664, 193470, 202080, 206368, 215552, 257960, 269440, 309552, 323328, 386940, 404160, 412736, 515920, 538880, 619104, 646656, 773880, 808320, 825472, 1031840, 1077760, 1238208, 1547760, 1616640, 1650944, 2063680, 2476416, 2715029, 3095520, 3233280, 3301888, 4127360, 4952832, 5430058, 6191040, 8145087, 8254720, 9905664, 10860116, 12382080, 13575145, 16290174, 16509440, 21720232, 24764160, 27150290, 32580348, 40725435, 43440464, 49528320, 54300580, 65160696, 81450870, 86880928, 108601160, 130321392, 162901740, 173761856, 217202320, 260642784, 325803480, 347523712, 434404640, 521285568, 651606960, 695047424, 868809280, 1042571136, 1303213920, 1390094848, 1737618560, 2085142272, 2606427840, 3475237120, 4170284544, 5212855680, 6950474240, 10425711360, 20851422720]

約数ペア:

[(1, 20851422720), (2, 10425711360), (3, 6950474240), (4, 5212855680), (5, 4170284544), (6, 3475237120), (8, 2606427840), (10, 2085142272), (12, 1737618560), (15, 1390094848), (16, 1303213920), (20, 1042571136), (24, 868809280), (30, 695047424), (32, 651606960), (40, 521285568), (48, 434404640), (60, 347523712), (64, 325803480), (80, 260642784), (96, 217202320), (120, 173761856), (128, 162901740), (160, 130321392), (192, 108601160), (240, 86880928), (256, 81450870), (320, 65160696), (384, 54300580), (421, 49528320), (480, 43440464), (512, 40725435), (640, 32580348), (768, 27150290), (842, 24764160), (960, 21720232), (1263, 16509440), (1280, 16290174), (1536, 13575145), (1684, 12382080), (1920, 10860116), (2105, 9905664), (2526, 8254720), (2560, 8145087), (3368, 6191040), (3840, 5430058), (4210, 4952832), (5052, 4127360), (6315, 3301888), (6449, 3233280), (6736, 3095520), (7680, 2715029), (8420, 2476416), (10104, 2063680), (12630, 1650944), (12898, 1616640), (13472, 1547760), (16840, 1238208), (19347, 1077760), (20208, 1031840), (25260, 825472), (25796, 808320), (26944, 773880), (32245, 646656), (33680, 619104), (38694, 538880), (40416, 515920), (50520, 412736), (51592, 404160), (53888, 386940), (64490, 323328), (67360, 309552), (77388, 269440), (80832, 257960), (96735, 215552), (101040, 206368), (103184, 202080), (107776, 193470), (128980, 161664), (134720, 154776)]