20487871440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{28541}}^1$

素因数の和:29557

約数の個数: 120

約数和(自身を含む): 68876526888

約数和(自身を除く): 48388655448

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 997, 1994, 2991, 3988, 4985, 5982, 7976, 8973, 9970, 11964, 14955, 15952, 17946, 19940, 23928, 28541, 29910, 35892, 39880, 44865, 47856, 57082, 59820, 71784, 79760, 85623, 89730, 114164, 119640, 142705, 143568, 171246, 179460, 228328, 239280, 256869, 285410, 342492, 358920, 428115, 456656, 513738, 570820, 684984, 717840, 856230, 1027476, 1141640, 1284345, 1369968, 1712460, 2054952, 2283280, 2568690, 3424920, 4109904, 5137380, 6849840, 10274760, 20549520, 28455377, 56910754, 85366131, 113821508, 142276885, 170732262, 227643016, 256098393, 284553770, 341464524, 426830655, 455286032, 512196786, 569107540, 682929048, 853661310, 1024393572, 1138215080, 1280491965, 1365858096, 1707322620, 2048787144, 2276430160, 2560983930, 3414645240, 4097574288, 5121967860, 6829290480, 10243935720, 20487871440]

約数ペア:

[(1, 20487871440), (2, 10243935720), (3, 6829290480), (4, 5121967860), (5, 4097574288), (6, 3414645240), (8, 2560983930), (9, 2276430160), (10, 2048787144), (12, 1707322620), (15, 1365858096), (16, 1280491965), (18, 1138215080), (20, 1024393572), (24, 853661310), (30, 682929048), (36, 569107540), (40, 512196786), (45, 455286032), (48, 426830655), (60, 341464524), (72, 284553770), (80, 256098393), (90, 227643016), (120, 170732262), (144, 142276885), (180, 113821508), (240, 85366131), (360, 56910754), (720, 28455377), (997, 20549520), (1994, 10274760), (2991, 6849840), (3988, 5137380), (4985, 4109904), (5982, 3424920), (7976, 2568690), (8973, 2283280), (9970, 2054952), (11964, 1712460), (14955, 1369968), (15952, 1284345), (17946, 1141640), (19940, 1027476), (23928, 856230), (28541, 717840), (29910, 684984), (35892, 570820), (39880, 513738), (44865, 456656), (47856, 428115), (57082, 358920), (59820, 342492), (71784, 285410), (79760, 256869), (85623, 239280), (89730, 228328), (114164, 179460), (119640, 171246), (142705, 143568)]