21027916

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1409}}^1$

素因数の和:1474

約数の個数: 48

約数和(自身を含む): 46428480

約数和(自身を除く): 25400564

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 41, 52, 82, 91, 164, 182, 287, 364, 533, 574, 1066, 1148, 1409, 2132, 2818, 3731, 5636, 7462, 9863, 14924, 18317, 19726, 36634, 39452, 57769, 73268, 115538, 128219, 231076, 256438, 404383, 512876, 750997, 808766, 1501994, 1617532, 3003988, 5256979, 10513958, 21027916]

約数ペア:

[(1, 21027916), (2, 10513958), (4, 5256979), (7, 3003988), (13, 1617532), (14, 1501994), (26, 808766), (28, 750997), (41, 512876), (52, 404383), (82, 256438), (91, 231076), (164, 128219), (182, 115538), (287, 73268), (364, 57769), (533, 39452), (574, 36634), (1066, 19726), (1148, 18317), (1409, 14924), (2132, 9863), (2818, 7462), (3731, 5636)]