28581280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{151}}^1$

素因数の和:199

約数の個数: 144

約数和(自身を含む): 84115584

約数和(自身を除く): 55534304

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 151, 160, 169, 182, 208, 224, 260, 280, 302, 338, 364, 416, 455, 520, 560, 604, 676, 728, 755, 845, 910, 1040, 1057, 1120, 1183, 1208, 1352, 1456, 1510, 1690, 1820, 1963, 2080, 2114, 2366, 2416, 2704, 2912, 3020, 3380, 3640, 3926, 4228, 4732, 4832, 5285, 5408, 5915, 6040, 6760, 7280, 7852, 8456, 9464, 9815, 10570, 11830, 12080, 13520, 13741, 14560, 15704, 16912, 18928, 19630, 21140, 23660, 24160, 25519, 27040, 27482, 31408, 33824, 37856, 39260, 42280, 47320, 51038, 54964, 62816, 68705, 78520, 84560, 94640, 102076, 109928, 127595, 137410, 157040, 169120, 178633, 189280, 204152, 219856, 255190, 274820, 314080, 357266, 408304, 439712, 510380, 549640, 714532, 816608, 893165, 1020760, 1099280, 1429064, 1786330, 2041520, 2198560, 2858128, 3572660, 4083040, 5716256, 7145320, 14290640, 28581280]

約数ペア:

[(1, 28581280), (2, 14290640), (4, 7145320), (5, 5716256), (7, 4083040), (8, 3572660), (10, 2858128), (13, 2198560), (14, 2041520), (16, 1786330), (20, 1429064), (26, 1099280), (28, 1020760), (32, 893165), (35, 816608), (40, 714532), (52, 549640), (56, 510380), (65, 439712), (70, 408304), (80, 357266), (91, 314080), (104, 274820), (112, 255190), (130, 219856), (140, 204152), (151, 189280), (160, 178633), (169, 169120), (182, 157040), (208, 137410), (224, 127595), (260, 109928), (280, 102076), (302, 94640), (338, 84560), (364, 78520), (416, 68705), (455, 62816), (520, 54964), (560, 51038), (604, 47320), (676, 42280), (728, 39260), (755, 37856), (845, 33824), (910, 31408), (1040, 27482), (1057, 27040), (1120, 25519), (1183, 24160), (1208, 23660), (1352, 21140), (1456, 19630), (1510, 18928), (1690, 16912), (1820, 15704), (1963, 14560), (2080, 13741), (2114, 13520), (2366, 12080), (2416, 11830), (2704, 10570), (2912, 9815), (3020, 9464), (3380, 8456), (3640, 7852), (3926, 7280), (4228, 6760), (4732, 6040), (4832, 5915), (5285, 5408)]