21288918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2273}}^1$

素因数の和:2508

約数の個数: 32

約数和(自身を含む): 48900096

約数和(自身を除く): 27611178

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 223, 446, 669, 1338, 1561, 2273, 3122, 4546, 4683, 6819, 9366, 13638, 15911, 31822, 47733, 95466, 506879, 1013758, 1520637, 3041274, 3548153, 7096306, 10644459, 21288918]

約数ペア:

[(1, 21288918), (2, 10644459), (3, 7096306), (6, 3548153), (7, 3041274), (14, 1520637), (21, 1013758), (42, 506879), (223, 95466), (446, 47733), (669, 31822), (1338, 15911), (1561, 13638), (2273, 9366), (3122, 6819), (4546, 4683)]