21357288

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{8017}}^1$

素因数の和:8066

約数の個数: 48

約数和(自身を含む): 59413380

約数和(自身を除く): 38056092

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 111, 148, 222, 296, 333, 444, 666, 888, 1332, 2664, 8017, 16034, 24051, 32068, 48102, 64136, 72153, 96204, 144306, 192408, 288612, 296629, 577224, 593258, 889887, 1186516, 1779774, 2373032, 2669661, 3559548, 5339322, 7119096, 10678644, 21357288]

約数ペア:

[(1, 21357288), (2, 10678644), (3, 7119096), (4, 5339322), (6, 3559548), (8, 2669661), (9, 2373032), (12, 1779774), (18, 1186516), (24, 889887), (36, 593258), (37, 577224), (72, 296629), (74, 288612), (111, 192408), (148, 144306), (222, 96204), (296, 72153), (333, 64136), (444, 48102), (666, 32068), (888, 24051), (1332, 16034), (2664, 8017)]