20581737

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{31}}^2\times {\mathrm{59}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 31696560

約数和(自身を除く): 11114823

約数列:

[1, 3, 11, 31, 33, 59, 93, 121, 177, 341, 363, 649, 961, 1023, 1829, 1947, 2883, 3751, 5487, 7139, 10571, 11253, 20119, 21417, 31713, 56699, 60357, 116281, 170097, 221309, 348843, 623689, 663927, 1871067, 6860579, 20581737]

約数ペア:

[(1, 20581737), (3, 6860579), (11, 1871067), (31, 663927), (33, 623689), (59, 348843), (93, 221309), (121, 170097), (177, 116281), (341, 60357), (363, 56699), (649, 31713), (961, 21417), (1023, 20119), (1829, 11253), (1947, 10571), (2883, 7139), (3751, 5487)]