21307720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76099}}^1$

素因数の和:76117

約数の個数: 32

約数和(自身を含む): 54792000

約数和(自身を除く): 33484280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76099, 152198, 304396, 380495, 532693, 608792, 760990, 1065386, 1521980, 2130772, 2663465, 3043960, 4261544, 5326930, 10653860, 21307720]

約数ペア:

[(1, 21307720), (2, 10653860), (4, 5326930), (5, 4261544), (7, 3043960), (8, 2663465), (10, 2130772), (14, 1521980), (20, 1065386), (28, 760990), (35, 608792), (40, 532693), (56, 380495), (70, 304396), (140, 152198), (280, 76099)]