15287720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{769}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 24629080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 769, 994, 1420, 1538, 1988, 2485, 2840, 3076, 3845, 3976, 4970, 5383, 6152, 7690, 9940, 10766, 15380, 19880, 21532, 26915, 30760, 43064, 53830, 54599, 107660, 109198, 215320, 218396, 272995, 382193, 436792, 545990, 764386, 1091980, 1528772, 1910965, 2183960, 3057544, 3821930, 7643860, 15287720]

約数ペア:

[(1, 15287720), (2, 7643860), (4, 3821930), (5, 3057544), (7, 2183960), (8, 1910965), (10, 1528772), (14, 1091980), (20, 764386), (28, 545990), (35, 436792), (40, 382193), (56, 272995), (70, 218396), (71, 215320), (140, 109198), (142, 107660), (280, 54599), (284, 53830), (355, 43064), (497, 30760), (568, 26915), (710, 21532), (769, 19880), (994, 15380), (1420, 10766), (1538, 9940), (1988, 7690), (2485, 6152), (2840, 5383), (3076, 4970), (3845, 3976)]