19978776

素因数分解:

$2^3\times 3^2\times {\mathrm{277483}}^1$

素因数の和:277495

約数の個数: 24

約数和(自身を含む): 54109380

約数和(自身を除く): 34130604

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 277483, 554966, 832449, 1109932, 1664898, 2219864, 2497347, 3329796, 4994694, 6659592, 9989388, 19978776]

約数ペア:

[(1, 19978776), (2, 9989388), (3, 6659592), (4, 4994694), (6, 3329796), (8, 2497347), (9, 2219864), (12, 1664898), (18, 1109932), (24, 832449), (36, 554966), (72, 277483)]