20923605

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{283}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 38278656

約数和(自身を除く): 17355051

約数列:

[1, 3, 5, 9, 15, 31, 45, 53, 93, 155, 159, 265, 279, 283, 465, 477, 795, 849, 1395, 1415, 1643, 2385, 2547, 4245, 4929, 8215, 8773, 12735, 14787, 14999, 24645, 26319, 43865, 44997, 73935, 74995, 78957, 131595, 134991, 224985, 394785, 464969, 674955, 1394907, 2324845, 4184721, 6974535, 20923605]

約数ペア:

[(1, 20923605), (3, 6974535), (5, 4184721), (9, 2324845), (15, 1394907), (31, 674955), (45, 464969), (53, 394785), (93, 224985), (155, 134991), (159, 131595), (265, 78957), (279, 74995), (283, 73935), (465, 44997), (477, 43865), (795, 26319), (849, 24645), (1395, 14999), (1415, 14787), (1643, 12735), (2385, 8773), (2547, 8215), (4245, 4929)]