21697425

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1321}}^1$

素因数の和:1410

約数の個数: 36

約数和(自身を含む): 39424684

約数和(自身を除く): 17727259

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1321, 1825, 3285, 3963, 5475, 6605, 11889, 16425, 19815, 33025, 59445, 96433, 99075, 289299, 297225, 482165, 867897, 1446495, 2410825, 4339485, 7232475, 21697425]

約数ペア:

[(1, 21697425), (3, 7232475), (5, 4339485), (9, 2410825), (15, 1446495), (25, 867897), (45, 482165), (73, 297225), (75, 289299), (219, 99075), (225, 96433), (365, 59445), (657, 33025), (1095, 19815), (1321, 16425), (1825, 11889), (3285, 6605), (3963, 5475)]