28287990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1223}}^1$

素因数の和:1493

約数の個数: 48

約数和(自身を含む): 73895328

約数和(自身を除く): 45607338

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 257, 514, 771, 1223, 1285, 1542, 2313, 2446, 2570, 3669, 3855, 4626, 6115, 7338, 7710, 11007, 11565, 12230, 18345, 22014, 23130, 36690, 55035, 110070, 314311, 628622, 942933, 1571555, 1885866, 2828799, 3143110, 4714665, 5657598, 9429330, 14143995, 28287990]

約数ペア:

[(1, 28287990), (2, 14143995), (3, 9429330), (5, 5657598), (6, 4714665), (9, 3143110), (10, 2828799), (15, 1885866), (18, 1571555), (30, 942933), (45, 628622), (90, 314311), (257, 110070), (514, 55035), (771, 36690), (1223, 23130), (1285, 22014), (1542, 18345), (2313, 12230), (2446, 11565), (2570, 11007), (3669, 7710), (3855, 7338), (4626, 6115)]