20043784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{809}}^1$

素因数の和:997

約数の個数: 32

約数和(自身を含む): 39852000

約数和(自身を除く): 19808216

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 163, 326, 652, 809, 1304, 1618, 3097, 3236, 6194, 6472, 12388, 15371, 24776, 30742, 61484, 122968, 131867, 263734, 527468, 1054936, 2505473, 5010946, 10021892, 20043784]

約数ペア:

[(1, 20043784), (2, 10021892), (4, 5010946), (8, 2505473), (19, 1054936), (38, 527468), (76, 263734), (152, 131867), (163, 122968), (326, 61484), (652, 30742), (809, 24776), (1304, 15371), (1618, 12388), (3097, 6472), (3236, 6194)]