21461648

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7937}}^1$

素因数の和:7971

約数の個数: 30

約数和(自身を含む): 45032274

約数和(自身を除く): 23570626

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7937, 15874, 31748, 63496, 103181, 126992, 206362, 412724, 825448, 1341353, 1650896, 2682706, 5365412, 10730824, 21461648]

約数ペア:

[(1, 21461648), (2, 10730824), (4, 5365412), (8, 2682706), (13, 1650896), (16, 1341353), (26, 825448), (52, 412724), (104, 206362), (169, 126992), (208, 103181), (338, 63496), (676, 31748), (1352, 15874), (2704, 7937)]