20412688

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{809}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 21772112

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 809, 1328, 1577, 1618, 3154, 3236, 6308, 6472, 12616, 12944, 15371, 25232, 30742, 61484, 67147, 122968, 134294, 245936, 268588, 537176, 1074352, 1275793, 2551586, 5103172, 10206344, 20412688]

約数ペア:

[(1, 20412688), (2, 10206344), (4, 5103172), (8, 2551586), (16, 1275793), (19, 1074352), (38, 537176), (76, 268588), (83, 245936), (152, 134294), (166, 122968), (304, 67147), (332, 61484), (664, 30742), (809, 25232), (1328, 15371), (1577, 12944), (1618, 12616), (3154, 6472), (3236, 6308)]