21261366

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{18749}}^1$

素因数の和:18770

約数の個数: 40

約数和(自身を含む): 54450000

約数和(自身を除く): 33188634

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 18749, 37498, 56247, 112494, 131243, 168741, 262486, 337482, 393729, 506223, 787458, 1012446, 1181187, 1518669, 2362374, 3037338, 3543561, 7087122, 10630683, 21261366]

約数ペア:

[(1, 21261366), (2, 10630683), (3, 7087122), (6, 3543561), (7, 3037338), (9, 2362374), (14, 1518669), (18, 1181187), (21, 1012446), (27, 787458), (42, 506223), (54, 393729), (63, 337482), (81, 262486), (126, 168741), (162, 131243), (189, 112494), (378, 56247), (567, 37498), (1134, 18749)]