21242019975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{352711}}^1$

素因数の和:352808

約数の個数: 48

約数和(自身を含む): 38837823744

約数和(自身を除く): 17595803769

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 73, 75, 165, 219, 275, 365, 803, 825, 1095, 1825, 2409, 4015, 5475, 12045, 20075, 60225, 352711, 1058133, 1763555, 3879821, 5290665, 8817775, 11639463, 19399105, 25747903, 26453325, 58197315, 77243709, 96995525, 128739515, 283226933, 290986575, 386218545, 643697575, 849680799, 1416134665, 1931092725, 4248403995, 7080673325, 21242019975]

約数ペア:

[(1, 21242019975), (3, 7080673325), (5, 4248403995), (11, 1931092725), (15, 1416134665), (25, 849680799), (33, 643697575), (55, 386218545), (73, 290986575), (75, 283226933), (165, 128739515), (219, 96995525), (275, 77243709), (365, 58197315), (803, 26453325), (825, 25747903), (1095, 19399105), (1825, 11639463), (2409, 8817775), (4015, 5290665), (5475, 3879821), (12045, 1763555), (20075, 1058133), (60225, 352711)]