20419044.000000000

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{274457}}^1$

素因数の和:274482

約数の個数: 48

約数和(自身を含む): 749270340

約数和(自身を除く): 492378588

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 274457, 548914, 823371, 1097828, 1646742, 2195656, 2470113, 3293484, 3567941, 4940226, 6586968, 7135882, 9880452, 10703823, 14271764, 19760904, 21407646, 28543528, 32111469, 42815292, 64222938, 85630584, 128445876, 256891752]

約数ペア:

[(1, 256891752), (2, 128445876), (3, 85630584), (4, 64222938), (6, 42815292), (8, 32111469), (9, 28543528), (12, 21407646), (13, 19760904), (18, 14271764), (24, 10703823), (26, 9880452), (36, 7135882), (39, 6586968), (52, 4940226), (72, 3567941), (78, 3293484), (104, 2470113), (117, 2195656), (156, 1646742), (234, 1097828), (312, 823371), (468, 548914), (936, 274457)]